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Finding the Fourth Proportional to 8,876.81, 12,250.39 and 5,101.20

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Solution

The fourth proportional to 8,876.81, 12,250.39 and 5,101.20 is: 7,039.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,876.81 : 12,250.39 = 5,101.20 : x
  2. Step 2: Convert to fraction form
    8,876.81/12,250.39 = 5,101.20/x
  3. Step 3: Cross multiply
    8,876.81x = 12,250.39 × 5,101.20
  4. Step 4: Simplify right side
    8,876.81x = 62,491,640.97
  5. Step 5: Solve for x
    x = 62,491,640.97/8,876.81
  6. Step 6: Final answer
    x = 7,039.88

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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.