Home / 3,791.52-5,231.88-2,112.57

Finding the Fourth Proportional to 3,791.52, 5,231.88 and 2,112.57

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Solution

The fourth proportional to 3,791.52, 5,231.88 and 2,112.57 is: 2,915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.52 : 5,231.88 = 2,112.57 : x
  2. Step 2: Convert to fraction form
    3,791.52/5,231.88 = 2,112.57/x
  3. Step 3: Cross multiply
    3,791.52x = 5,231.88 × 2,112.57
  4. Step 4: Simplify right side
    3,791.52x = 11,052,712.73
  5. Step 5: Solve for x
    x = 11,052,712.73/3,791.52
  6. Step 6: Final answer
    x = 2,915.11

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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.