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Finding the Fourth Proportional to 2,691.72, 4,033.31 and 2,076.93

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Solution

The fourth proportional to 2,691.72, 4,033.31 and 2,076.93 is: 3,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.72 : 4,033.31 = 2,076.93 : x
  2. Step 2: Convert to fraction form
    2,691.72/4,033.31 = 2,076.93/x
  3. Step 3: Cross multiply
    2,691.72x = 4,033.31 × 2,076.93
  4. Step 4: Simplify right side
    2,691.72x = 8,376,892.15
  5. Step 5: Solve for x
    x = 8,376,892.15/2,691.72
  6. Step 6: Final answer
    x = 3,112.10

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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.