How do make a proportion
To make a proportion, you need to understand the series in the ratio. You can then make an equation from the numbers so that you can determine the proportion. Get detailed information on http://www.ehow.com/how_2308731_set-up-proportion-problems.html.
Examples:1). 3 cups flour to 1 cup sugar = 3cp f/2cp s. or 3/2. or 3:22). 30 miles per hour = 30mi/1hr.