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Finding the Fourth Proportional to 8,480.97, 12,713.85 and 4,318.65

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Solution

The fourth proportional to 8,480.97, 12,713.85 and 4,318.65 is: 6,474.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.97 : 12,713.85 = 4,318.65 : x
  2. Step 2: Convert to fraction form
    8,480.97/12,713.85 = 4,318.65/x
  3. Step 3: Cross multiply
    8,480.97x = 12,713.85 × 4,318.65
  4. Step 4: Simplify right side
    8,480.97x = 54,906,668.30
  5. Step 5: Solve for x
    x = 54,906,668.30/8,480.97
  6. Step 6: Final answer
    x = 6,474.10

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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.