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Finding the Third Proportional to 4,321.69 and 6,685.13

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Solution

The third proportional to 4,321.69 and 6,685.13 is: 10,341.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,321.69 : 6,685.13 = 6,685.13 : x
  2. Step 2: Convert to fraction form
    4,321.69/6,685.13 = 6,685.13/x
  3. Step 3: Cross multiply
    4,321.69x = 6,685.13 × 6,685.13
  4. Step 4: Simplify right side
    4,321.69x = 44,690,896.27
  5. Step 5: Solve for x
    x = 44,690,896.27/4,321.69
  6. Step 6: Final answer
    x = 10,341.08

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.