Home / 3,791.24-5,231.85-2,112.71

Finding the Fourth Proportional to 3,791.24, 5,231.85 and 2,112.71

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Solution

The fourth proportional to 3,791.24, 5,231.85 and 2,112.71 is: 2,915.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.24 : 5,231.85 = 2,112.71 : x
  2. Step 2: Convert to fraction form
    3,791.24/5,231.85 = 2,112.71/x
  3. Step 3: Cross multiply
    3,791.24x = 5,231.85 × 2,112.71
  4. Step 4: Simplify right side
    3,791.24x = 11,053,394.89
  5. Step 5: Solve for x
    x = 11,053,394.89/3,791.24
  6. Step 6: Final answer
    x = 2,915.51

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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.