Finding the Third Proportional to 1,239.75 and 2,989.13
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Solution
The third proportional to 1,239.75 and 2,989.13 is: 7,206.99
Step by Step Solution
- Step 1: Write the proportion equation
1,239.75 : 2,989.13 = 2,989.13 : x - Step 2: Convert to fraction form
1,239.75/2,989.13 = 2,989.13/x - Step 3: Cross multiply
1,239.75x = 2,989.13 × 2,989.13 - Step 4: Simplify right side
1,239.75x = 8,934,868.27 - Step 5: Solve for x
x = 8,934,868.27/1,239.75 - Step 6: Final answer
x = 7,206.99
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These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.