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Finding the Fourth Proportional to 8,472.80, 12,708.90 and 2,232.71

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Solution

The fourth proportional to 8,472.80, 12,708.90 and 2,232.71 is: 3,348.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.80 : 12,708.90 = 2,232.71 : x
  2. Step 2: Convert to fraction form
    8,472.80/12,708.90 = 2,232.71/x
  3. Step 3: Cross multiply
    8,472.80x = 12,708.90 × 2,232.71
  4. Step 4: Simplify right side
    8,472.80x = 28,375,343.72
  5. Step 5: Solve for x
    x = 28,375,343.72/8,472.80
  6. Step 6: Final answer
    x = 3,348.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.