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Setting up and Solving Proportional Equations. Thursday, November 13, 2014 We are learning to…solve problems that involve proportional reasoning. What is a proportion?. Proportion – two ratios (comparisons) that are equal. Example:
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Setting up and Solving Proportional Equations Thursday, November 13, 2014 We are learning to…solve problems that involve proportional reasoning.
What is a proportion? • Proportion – two ratios (comparisons) that are equal. • Example: • Charlie makes 5 phone calls in 2 days. How many phone calls will he make in 12 days? Table: Proportion: Calls Days 5 2 x 12
Use your equation solving skills to find the solution of the proportion below. (12) (12) Charlie will make 30 phone calls in 12 days
Practice Problem #1 • A pipe leaks 7 quarts of water in 6 hours. At this rate how much water will the pipe leak in 10 hours? Table: Proportion: Solution: The pipe will leak 11 and 2/3 quarts of water in 10 hours. (10) (10)
Practice Problem #2 • Xavier sends 52 text messages in 4 days. At this rate how many text messages will he send in 7 days? Table: Proportion: Solution: Xavier will send 91 text messages in 7 days. (7) (7)