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Finding the Fourth Proportional to 2,791.88, 4,187.56 and 1,695.92

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Solution

The fourth proportional to 2,791.88, 4,187.56 and 1,695.92 is: 2,543.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.88 : 4,187.56 = 1,695.92 : x
  2. Step 2: Convert to fraction form
    2,791.88/4,187.56 = 1,695.92/x
  3. Step 3: Cross multiply
    2,791.88x = 4,187.56 × 1,695.92
  4. Step 4: Simplify right side
    2,791.88x = 7,101,766.76
  5. Step 5: Solve for x
    x = 7,101,766.76/2,791.88
  6. Step 6: Final answer
    x = 2,543.72

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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.