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Finding the Fourth Proportional to 2,675.86, 3,691.14 and 1,612.90

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Solution

The fourth proportional to 2,675.86, 3,691.14 and 1,612.90 is: 2,224.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,675.86 : 3,691.14 = 1,612.90 : x
  2. Step 2: Convert to fraction form
    2,675.86/3,691.14 = 1,612.90/x
  3. Step 3: Cross multiply
    2,675.86x = 3,691.14 × 1,612.90
  4. Step 4: Simplify right side
    2,675.86x = 5,953,439.71
  5. Step 5: Solve for x
    x = 5,953,439.71/2,675.86
  6. Step 6: Final answer
    x = 2,224.87

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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.