Math Dictionary / Proportion
Proportion
A proportion is an equation that says two ratios are equal.
Ratios and ProportionsGrade 6Grade 7Grade 8Algebra 1GEDSATACT
What it means
Proportions are often used to solve scale, percent, and rate problems.
Also called: equal ratios
Examples
| 1/2 = 3/6 |
| If 4 apples cost $6, 8 apples cost $12 |
| Scale drawings use proportions |
Common mistake
Both ratios must compare quantities in the same order.
Try one
Question: Are 2/5 and 6/15 proportional?
Show answer
Yes. 2/5 = 6/15.