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Finding the Fourth Proportional to 8,757.76, 13,140.24 and 6,910.96

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Solution

The fourth proportional to 8,757.76, 13,140.24 and 6,910.96 is: 10,369.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.76 : 13,140.24 = 6,910.96 : x
  2. Step 2: Convert to fraction form
    8,757.76/13,140.24 = 6,910.96/x
  3. Step 3: Cross multiply
    8,757.76x = 13,140.24 × 6,910.96
  4. Step 4: Simplify right side
    8,757.76x = 90,811,673.03
  5. Step 5: Solve for x
    x = 90,811,673.03/8,757.76
  6. Step 6: Final answer
    x = 10,369.28

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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.