Proportions 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 that are being compared and set them equal to each other as a fraction.

Front

What is the formula to find the missing value in a proportion?

Back

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

Front

If the exchange rate is $3 to 4 Francs, how many Francs do you get for $12?

Back

16 Francs.

Front

If the exchange rate is 3 Dinars for every $4, how many Dinars do you get for $12?

Back

9 Dinars.

Front

What does a scale of 1 cm : 13 km mean on a map?

Back

It means that 1 cm on the map represents 13 km in reality.

Front

How do you calculate the distance on a map using a scale?

Back

Divide the real distance by the scale factor.

Front

If a model giraffe has a scale of 1 in : 3 ft, how tall is a 5 in model giraffe in real life?

Back

15 ft.

Front

What is the unit rate?

Back

The unit rate is a comparison of any two separate but related quantities when one of the terms is set to 1.

Front

How do you find the unit price of an item?

Back

Divide the total price by the number of items.