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Finding the Fourth Proportional to 8,927.39, 12,321.11 and 5,149.82

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Solution

The fourth proportional to 8,927.39, 12,321.11 and 5,149.82 is: 7,107.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,927.39 : 12,321.11 = 5,149.82 : x
  2. Step 2: Convert to fraction form
    8,927.39/12,321.11 = 5,149.82/x
  3. Step 3: Cross multiply
    8,927.39x = 12,321.11 × 5,149.82
  4. Step 4: Simplify right side
    8,927.39x = 63,451,542.38
  5. Step 5: Solve for x
    x = 63,451,542.38/8,927.39
  6. Step 6: Final answer
    x = 7,107.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.