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Finding the Fourth Proportional to 9,761.60, 13,462.80 and 7,520.96

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Solution

The fourth proportional to 9,761.60, 13,462.80 and 7,520.96 is: 10,372.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,761.60 : 13,462.80 = 7,520.96 : x
  2. Step 2: Convert to fraction form
    9,761.60/13,462.80 = 7,520.96/x
  3. Step 3: Cross multiply
    9,761.60x = 13,462.80 × 7,520.96
  4. Step 4: Simplify right side
    9,761.60x = 101,253,180.29
  5. Step 5: Solve for x
    x = 101,253,180.29/9,761.60
  6. Step 6: Final answer
    x = 10,372.60

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1.5x scale

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.