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Finding the Fourth Proportional to 8,542.80, 12,814.40 and 3,002.52

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Solution

The fourth proportional to 8,542.80, 12,814.40 and 3,002.52 is: 4,503.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,542.80 : 12,814.40 = 3,002.52 : x
  2. Step 2: Convert to fraction form
    8,542.80/12,814.40 = 3,002.52/x
  3. Step 3: Cross multiply
    8,542.80x = 12,814.40 × 3,002.52
  4. Step 4: Simplify right side
    8,542.80x = 38,475,492.29
  5. Step 5: Solve for x
    x = 38,475,492.29/8,542.80
  6. Step 6: Final answer
    x = 4,503.85

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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.