Solving Proportion Problems

In Proportion

Proportions are all about equivalent relationships. They come in handy for scaled drawings, rate problems, percentages, word problems, and many other applications. Solving proportions algebraically is a skill you need for the GED and for life.

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What is a proportion problem? Simply put, it's equal relationships. Mathematically, it looks like equal fractions with a missing value. Solving for that missing value is simple! Just cross multiply to get rid of those pesky fractions, then follow the basic process of solving equations that you learned last lesson.

Watch the Virtual GED Class video below for a complete explanation and tons of worked example problems.


Practice solving straightforward proportion problems with this Khan Academy practice set.

Practice solving proportion problems with fractional answers and variables on both sides.

Practice writing your own proportions and solving them with this Khan Academy practice set.


Beginning 1

Beginning 2

Experienced 1


Challenge 2

Challenge 3