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Finding the Fourth Proportional to 8,332.92, 12,489.96 and 3,396.36

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Solution

The fourth proportional to 8,332.92, 12,489.96 and 3,396.36 is: 5,090.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,332.92 : 12,489.96 = 3,396.36 : x
  2. Step 2: Convert to fraction form
    8,332.92/12,489.96 = 3,396.36/x
  3. Step 3: Cross multiply
    8,332.92x = 12,489.96 × 3,396.36
  4. Step 4: Simplify right side
    8,332.92x = 42,420,400.55
  5. Step 5: Solve for x
    x = 42,420,400.55/8,332.92
  6. Step 6: Final answer
    x = 5,090.70

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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.