Solving Proportions

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, cross-multiply the two ratios and then solve for the unknown variable.

Front

What is the formula for finding the unit rate?

Back

The unit rate is found by dividing the total amount by the number of units, expressed as 'amount per unit'.

Front

If 8 slices of pizza cost $12, what is the cost of one slice?

Back

$1.50

Front

If Hunter buys 36 baseball cards for $18, how many baseball cards can Troy buy with $9?

Back

18 baseball cards

Front

If Ms. Hensley can grow 225 bushels in 3 acres, how many bushels can she grow in 9.6 acres?

Back

720 bushels

Front

If there are 5 ice cream cones for every 3 brownies sold, how many ice cream cones are sold if 24 brownies are sold?

Back

40 ice cream cones

Front

What is the cross-multiplication method?

Back

The cross-multiplication method involves multiplying the numerator of one ratio by the denominator of the other ratio to find the unknown.

Front

What does it mean to find a missing value in a proportion?

Back

Finding a missing value in a proportion means determining the unknown quantity that makes the two ratios equal.

Front

How can you check if two ratios are proportional?

Back

You can check if two ratios are proportional by cross-multiplying and seeing if the products are equal.