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Finding the Fourth Proportional to 8,475.65, 12,712.11 and 2,318.21

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Solution

The fourth proportional to 8,475.65, 12,712.11 and 2,318.21 is: 3,476.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,475.65 : 12,712.11 = 2,318.21 : x
  2. Step 2: Convert to fraction form
    8,475.65/12,712.11 = 2,318.21/x
  3. Step 3: Cross multiply
    8,475.65x = 12,712.11 × 2,318.21
  4. Step 4: Simplify right side
    8,475.65x = 29,469,340.52
  5. Step 5: Solve for x
    x = 29,469,340.52/8,475.65
  6. Step 6: Final answer
    x = 3,476.94

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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.