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Finding the Fourth Proportional to 6,691.68, 9,966.24 and 6,613.92

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Solution

The fourth proportional to 6,691.68, 9,966.24 and 6,613.92 is: 9,850.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,691.68 : 9,966.24 = 6,613.92 : x
  2. Step 2: Convert to fraction form
    6,691.68/9,966.24 = 6,613.92/x
  3. Step 3: Cross multiply
    6,691.68x = 9,966.24 × 6,613.92
  4. Step 4: Simplify right side
    6,691.68x = 65,915,914.06
  5. Step 5: Solve for x
    x = 65,915,914.06/6,691.68
  6. Step 6: Final answer
    x = 9,850.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.