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Finding the Fourth Proportional to 8,909.60, 13,357.10 and 3,359.78

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Solution

The fourth proportional to 8,909.60, 13,357.10 and 3,359.78 is: 5,036.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.60 : 13,357.10 = 3,359.78 : x
  2. Step 2: Convert to fraction form
    8,909.60/13,357.10 = 3,359.78/x
  3. Step 3: Cross multiply
    8,909.60x = 13,357.10 × 3,359.78
  4. Step 4: Simplify right side
    8,909.60x = 44,876,909.14
  5. Step 5: Solve for x
    x = 44,876,909.14/8,909.60
  6. Step 6: Final answer
    x = 5,036.92

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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.