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Finding the Fourth Proportional to 6,519.60, 9,761.13 and 3,392.79

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Solution

The fourth proportional to 6,519.60, 9,761.13 and 3,392.79 is: 5,079.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,519.60 : 9,761.13 = 3,392.79 : x
  2. Step 2: Convert to fraction form
    6,519.60/9,761.13 = 3,392.79/x
  3. Step 3: Cross multiply
    6,519.60x = 9,761.13 × 3,392.79
  4. Step 4: Simplify right side
    6,519.60x = 33,117,464.25
  5. Step 5: Solve for x
    x = 33,117,464.25/6,519.60
  6. Step 6: Final answer
    x = 5,079.68

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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.