Home / 7,691.28-11,529.96-2,760.12

Finding the Fourth Proportional to 7,691.28, 11,529.96 and 2,760.12

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Solution

The fourth proportional to 7,691.28, 11,529.96 and 2,760.12 is: 4,137.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.28 : 11,529.96 = 2,760.12 : x
  2. Step 2: Convert to fraction form
    7,691.28/11,529.96 = 2,760.12/x
  3. Step 3: Cross multiply
    7,691.28x = 11,529.96 × 2,760.12
  4. Step 4: Simplify right side
    7,691.28x = 31,824,073.20
  5. Step 5: Solve for x
    x = 31,824,073.20/7,691.28
  6. Step 6: Final answer
    x = 4,137.68

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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.