Home / 3,791.26-5,687.62-1,326.78

Finding the Fourth Proportional to 3,791.26, 5,687.62 and 1,326.78

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Solution

The fourth proportional to 3,791.26, 5,687.62 and 1,326.78 is: 1,990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.26 : 5,687.62 = 1,326.78 : x
  2. Step 2: Convert to fraction form
    3,791.26/5,687.62 = 1,326.78/x
  3. Step 3: Cross multiply
    3,791.26x = 5,687.62 × 1,326.78
  4. Step 4: Simplify right side
    3,791.26x = 7,546,220.46
  5. Step 5: Solve for x
    x = 7,546,220.46/3,791.26
  6. Step 6: Final answer
    x = 1,990.43

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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.