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Finding the Fourth Proportional to 8,626.59, 12,939.89 and 5,349.15

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Solution

The fourth proportional to 8,626.59, 12,939.89 and 5,349.15 is: 8,023.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.59 : 12,939.89 = 5,349.15 : x
  2. Step 2: Convert to fraction form
    8,626.59/12,939.89 = 5,349.15/x
  3. Step 3: Cross multiply
    8,626.59x = 12,939.89 × 5,349.15
  4. Step 4: Simplify right side
    8,626.59x = 69,217,385.85
  5. Step 5: Solve for x
    x = 69,217,385.85/8,626.59
  6. Step 6: Final answer
    x = 8,023.73

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Similar ratio
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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.