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Finding the Fourth Proportional to 8,757.72, 13,137.03 and 6,680.97

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Solution

The fourth proportional to 8,757.72, 13,137.03 and 6,680.97 is: 10,021.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.72 : 13,137.03 = 6,680.97 : x
  2. Step 2: Convert to fraction form
    8,757.72/13,137.03 = 6,680.97/x
  3. Step 3: Cross multiply
    8,757.72x = 13,137.03 × 6,680.97
  4. Step 4: Simplify right side
    8,757.72x = 87,768,103.32
  5. Step 5: Solve for x
    x = 87,768,103.32/8,757.72
  6. Step 6: Final answer
    x = 10,021.80

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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.