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Finding the Fourth Proportional to 6,310.80, 8,708.72 and 3,954.24

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Solution

The fourth proportional to 6,310.80, 8,708.72 and 3,954.24 is: 5,456.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,310.80 : 8,708.72 = 3,954.24 : x
  2. Step 2: Convert to fraction form
    6,310.80/8,708.72 = 3,954.24/x
  3. Step 3: Cross multiply
    6,310.80x = 8,708.72 × 3,954.24
  4. Step 4: Simplify right side
    6,310.80x = 34,436,349.20
  5. Step 5: Solve for x
    x = 34,436,349.20/6,310.80
  6. Step 6: Final answer
    x = 5,456.73

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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.