﻿ Definition and examples of proportion | define proportion - algebra - Free Math Dictionary Online

# Proportion

## Definition of Proportion

A proportion is an equation written in the form stating that two ratios are equivalent.

In other words, two sets of numbers are proportional if one set is a constant times the other.

### Example of Proportion

, are examples of proportions.

A. 11 ft
B. 12 ft
C. 9 ft
D. 10 ft

### Solution:

Step 1: Let n be the length of Honda bike cardboard model.
Step 2:                  [Write a proportion.]
Step 3: n × 2 = 4 × 5         [Write the cross products.]
Step 4: n = 10 [Simplify the expression.]
Step 5: The length of the Honda bike cardboard model is 10 ft.

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