Proportion Word Problems and Scale Drawings

Front

What is a proportion?

Back

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

Front

What does scale mean in a drawing?

Back

Scale refers to the ratio of the size of a drawing to the actual size of the object it represents.

Front

If a scale is 1 inch : 2 feet, how do you convert inches to feet?

Back

Multiply the number of inches by 2 to get the equivalent feet.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit.

Front

How do you find the unit rate from a total?

Back

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

Front

If a blueprint uses a scale of 3cm = 4.5m, how do you find the actual length from the drawing?

Back

Use the ratio to set up a proportion and solve for the actual length.

Front

What is the formula to find the actual size using a scale?

Back

Actual size = (Size on drawing) x (Scale factor).

Front

How do you convert feet to inches?

Back

Multiply the number of feet by 12 to get the equivalent inches.

Front

If a drawing shows an object as 5 inches long and the scale is 1 inch : 2 feet, what is the actual length?

Back

The actual length is 10 feet.

Front

What is the purpose of using scale drawings?

Back

Scale drawings help to represent large objects in a manageable size while maintaining accurate proportions.