Finding the Third Proportional to 7,131 and 8,715
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Solution
The third proportional to 7,131 and 8,715 is: 10,650.85
Step by Step Solution
- Step 1: Write the proportion equation
7,131 : 8,715 = 8,715 : x - Step 2: Convert to fraction form
7,131/8,715 = 8,715/x - Step 3: Cross multiply
7,131x = 8,715 × 8,715 - Step 4: Simplify right side
7,131x = 75,951,225 - Step 5: Solve for x
x = 75,951,225/7,131 - Step 6: Final answer
x = 10,650.85
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Why These Related Problems?
These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.