Proportion Word Problems

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve a proportion?

Back

To solve a proportion, you can use cross-multiplication or find a common ratio.

Front

What is the scale of a map?

Back

The scale of a map shows the relationship between distances on the map and actual distances in the real world.

Front

If 5 books cost $25, what is the cost of 1 book?

Back

$5

Front

If a recipe requires 2 cups of flour for 24 cookies, how much flour is needed for 12 cookies?

Back

1 cup of flour.

Front

What is the formula to find the unit rate?

Back

Unit rate = Total amount / Number of units.

Front

How do you set up a proportion for a word problem?

Back

Identify the two ratios involved and set them equal to each other.

Front

If a car travels 360 miles in 6 hours, what is its speed in miles per hour?

Back

60 miles per hour.

Front

What is the relationship between multiplication and division in solving proportions?

Back

Multiplication is used to find the total, while division is used to find the unit rate.

Front

How do you find the missing value in a proportion?

Back

Cross-multiply and then solve for the missing variable.