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 set up a proportion for a word problem?

Back

Identify the two quantities being compared, write them as a fraction, and set them equal to each other.

Front

What is the formula for finding the value of x in a proportion?

Back

If a/b = c/d, then ad = bc.

Front

How do you convert currency using a proportion?

Back

Use the exchange rate as a ratio to set up a proportion to find the equivalent amount in another currency.

Front

If 8 cm of tape wraps 4 presents, how much tape is needed for 1 present?

Back

2 cm of tape is needed for 1 present.

Front

If a car travels 20 miles in 20 minutes, what is its speed in miles per hour?

Back

The speed is 60 miles per hour.

Front

How do you find the unit rate from a word problem?

Back

Divide the total amount by the number of units to find the rate per unit.

Front

What is the relationship between distance, rate, and time?

Back

Distance = Rate × Time.

Front

How do you calculate the cost per item in a word problem?

Back

Divide the total cost by the number of items.

Front

If 1 bag of carrots costs $3, how much do 6 bags cost?

Back

$18.