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Finding the Fourth Proportional to 8,149.54, 12,221.84 and 4,251.82

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Solution

The fourth proportional to 8,149.54, 12,221.84 and 4,251.82 is: 6,376.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,149.54 : 12,221.84 = 4,251.82 : x
  2. Step 2: Convert to fraction form
    8,149.54/12,221.84 = 4,251.82/x
  3. Step 3: Cross multiply
    8,149.54x = 12,221.84 × 4,251.82
  4. Step 4: Simplify right side
    8,149.54x = 51,965,063.75
  5. Step 5: Solve for x
    x = 51,965,063.75/8,149.54
  6. Step 6: Final answer
    x = 6,376.44

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1.5x scale

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.