Home / 7,165.20-10,743.92-2,781.48

Finding the Fourth Proportional to 7,165.20, 10,743.92 and 2,781.48

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Solution

The fourth proportional to 7,165.20, 10,743.92 and 2,781.48 is: 4,170.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,165.20 : 10,743.92 = 2,781.48 : x
  2. Step 2: Convert to fraction form
    7,165.20/10,743.92 = 2,781.48/x
  3. Step 3: Cross multiply
    7,165.20x = 10,743.92 × 2,781.48
  4. Step 4: Simplify right side
    7,165.20x = 29,883,998.60
  5. Step 5: Solve for x
    x = 29,883,998.60/7,165.20
  6. Step 6: Final answer
    x = 4,170.71

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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.