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Finding the Fourth Proportional to 8,912.52, 13,367.97 and 6,987.96

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Solution

The fourth proportional to 8,912.52, 13,367.97 and 6,987.96 is: 10,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.52 : 13,367.97 = 6,987.96 : x
  2. Step 2: Convert to fraction form
    8,912.52/13,367.97 = 6,987.96/x
  3. Step 3: Cross multiply
    8,912.52x = 13,367.97 × 6,987.96
  4. Step 4: Simplify right side
    8,912.52x = 93,414,839.64
  5. Step 5: Solve for x
    x = 93,414,839.64/8,912.52
  6. Step 6: Final answer
    x = 10,481.30

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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.