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Finding the Fourth Proportional to 9,008.71, 12,425.18 and 7,751.87

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Solution

The fourth proportional to 9,008.71, 12,425.18 and 7,751.87 is: 10,691.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,008.71 : 12,425.18 = 7,751.87 : x
  2. Step 2: Convert to fraction form
    9,008.71/12,425.18 = 7,751.87/x
  3. Step 3: Cross multiply
    9,008.71x = 12,425.18 × 7,751.87
  4. Step 4: Simplify right side
    9,008.71x = 96,318,325.80
  5. Step 5: Solve for x
    x = 96,318,325.80/9,008.71
  6. Step 6: Final answer
    x = 10,691.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.