# Chapter 4: Applying Proportions

**Basic**Created by: CK-12

## Introduction

In Math 8, the learning content is divided into Concepts. Each Concept is whole and complete providing focused learning on an indicated objective. Real-world Concepts involve the student in the learning objective of each Concept. Students are given opportunities to practice skills through real-world situations, examples, guided practice and independent practice sections. There are video links provided for Concept connections with technology. In this Chapter, students will engage with content that is related to proportions. Concepts will include ratios, unit rates, equivalent rates, solving proportions, unit scale, scale factor, scale drawings, maps and floor plans, customary and metric units of measurement and problem solving.

## Chapter Outline

- 4.1. Write, Compare, and Order Ratios
- 4.2. Use Unit Rates and Equivalent Rates
- 4.3. Write and Solve Proportions by Using Equivalent Rates
- 4.4. Write and Solve Proportions by Using Cross-Products
- 4.5. Connect Proportions to Real-World Situations
- 4.6. Use Unit Scale When Problem Solving
- 4.7. Use Scale Factor When Problem Solving
- 4.8. Read and Interpret Scale Drawings and Floor Plans
- 4.9. Read and Interpret Maps Involving Distance and Area
- 4.10. Understand Three-Dimensional Scale Models and Designs
- 4.11. Understand Scale Relationships
- 4.12. Convert Customary Units of Measurement
- 4.13. Convert Customary Units of Measurement in Real-World Situations
- 4.14. Convert Metric Units of Measurement
- 4.15. Convert Metric Units of Measurement in Real-World Situations
- 4.16. Use Metric and Customary Units of Measurement in Problem Solving
- 4.17. Solve Problems Involving Rates and Unit Analysis

### Chapter Summary

## Summary

Having completed this chapter, students are now ready to move on to the next Chapter. Each Concept has provided students with an opportunity to engage and practice skills in many Concepts including ratios, unit rates, equivalent rates, solving proportions, unit scale, scale factor, scale drawings, maps and floor plans, customary and metric units of measurement and problem solving.