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Finding the Fourth Proportional to 2,691.87, 3,714.74 and 1,512.91

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Solution

The fourth proportional to 2,691.87, 3,714.74 and 1,512.91 is: 2,087.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.87 : 3,714.74 = 1,512.91 : x
  2. Step 2: Convert to fraction form
    2,691.87/3,714.74 = 1,512.91/x
  3. Step 3: Cross multiply
    2,691.87x = 3,714.74 × 1,512.91
  4. Step 4: Simplify right side
    2,691.87x = 5,620,067.29
  5. Step 5: Solve for x
    x = 5,620,067.29/2,691.87
  6. Step 6: Final answer
    x = 2,087.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.