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Finding the Fourth Proportional to 5,687.88, 8,531.82 and 1,791.52

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Solution

The fourth proportional to 5,687.88, 8,531.82 and 1,791.52 is: 2,687.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.88 : 8,531.82 = 1,791.52 : x
  2. Step 2: Convert to fraction form
    5,687.88/8,531.82 = 1,791.52/x
  3. Step 3: Cross multiply
    5,687.88x = 8,531.82 × 1,791.52
  4. Step 4: Simplify right side
    5,687.88x = 15,284,926.17
  5. Step 5: Solve for x
    x = 15,284,926.17/5,687.88
  6. Step 6: Final answer
    x = 2,687.28

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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.