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Finding the Fourth Proportional to 8,318.54, 12,454.05 and 6,341.87

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Solution

The fourth proportional to 8,318.54, 12,454.05 and 6,341.87 is: 9,494.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.54 : 12,454.05 = 6,341.87 : x
  2. Step 2: Convert to fraction form
    8,318.54/12,454.05 = 6,341.87/x
  3. Step 3: Cross multiply
    8,318.54x = 12,454.05 × 6,341.87
  4. Step 4: Simplify right side
    8,318.54x = 78,981,966.07
  5. Step 5: Solve for x
    x = 78,981,966.07/8,318.54
  6. Step 6: Final answer
    x = 9,494.69

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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.