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Finding the Fourth Proportional to 8,609.13, 11,877.17 and 5,251.68

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Solution

The fourth proportional to 8,609.13, 11,877.17 and 5,251.68 is: 7,245.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.13 : 11,877.17 = 5,251.68 : x
  2. Step 2: Convert to fraction form
    8,609.13/11,877.17 = 5,251.68/x
  3. Step 3: Cross multiply
    8,609.13x = 11,877.17 × 5,251.68
  4. Step 4: Simplify right side
    8,609.13x = 62,375,138.97
  5. Step 5: Solve for x
    x = 62,375,138.97/8,609.13
  6. Step 6: Final answer
    x = 7,245.23

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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.