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Finding the Fourth Proportional to 2,691.86, 3,713.51 and 1,572.84

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Solution

The fourth proportional to 2,691.86, 3,713.51 and 1,572.84 is: 2,169.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.86 : 3,713.51 = 1,572.84 : x
  2. Step 2: Convert to fraction form
    2,691.86/3,713.51 = 1,572.84/x
  3. Step 3: Cross multiply
    2,691.86x = 3,713.51 × 1,572.84
  4. Step 4: Simplify right side
    2,691.86x = 5,840,761.00
  5. Step 5: Solve for x
    x = 5,840,761.00/2,691.86
  6. Step 6: Final answer
    x = 2,169.79

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