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Finding the Fourth Proportional to 8,169.39, 12,247.20 and 3,789.99

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Solution

The fourth proportional to 8,169.39, 12,247.20 and 3,789.99 is: 5,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.39 : 12,247.20 = 3,789.99 : x
  2. Step 2: Convert to fraction form
    8,169.39/12,247.20 = 3,789.99/x
  3. Step 3: Cross multiply
    8,169.39x = 12,247.20 × 3,789.99
  4. Step 4: Simplify right side
    8,169.39x = 46,416,765.53
  5. Step 5: Solve for x
    x = 46,416,765.53/8,169.39
  6. Step 6: Final answer
    x = 5,681.79

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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.