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Finding the Fourth Proportional to 2,791.92, 4,188.60 and 1,060.68

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Solution

The fourth proportional to 2,791.92, 4,188.60 and 1,060.68 is: 1,591.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.92 : 4,188.60 = 1,060.68 : x
  2. Step 2: Convert to fraction form
    2,791.92/4,188.60 = 1,060.68/x
  3. Step 3: Cross multiply
    2,791.92x = 4,188.60 × 1,060.68
  4. Step 4: Simplify right side
    2,791.92x = 4,442,764.25
  5. Step 5: Solve for x
    x = 4,442,764.25/2,791.92
  6. Step 6: Final answer
    x = 1,591.29

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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.