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Finding the Fourth Proportional to 3,791.97, 5,231.47 and 2,799.62

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Solution

The fourth proportional to 3,791.97, 5,231.47 and 2,799.62 is: 3,862.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.97 : 5,231.47 = 2,799.62 : x
  2. Step 2: Convert to fraction form
    3,791.97/5,231.47 = 2,799.62/x
  3. Step 3: Cross multiply
    3,791.97x = 5,231.47 × 2,799.62
  4. Step 4: Simplify right side
    3,791.97x = 14,646,128.04
  5. Step 5: Solve for x
    x = 14,646,128.04/3,791.97
  6. Step 6: Final answer
    x = 3,862.41

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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.