Home / 1,331.31-1,996.88-591.15

Finding the Fourth Proportional to 1,331.31, 1,996.88 and 591.15

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Solution

The fourth proportional to 1,331.31, 1,996.88 and 591.15 is: 886.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.31 : 1,996.88 = 591.15 : x
  2. Step 2: Convert to fraction form
    1,331.31/1,996.88 = 591.15/x
  3. Step 3: Cross multiply
    1,331.31x = 1,996.88 × 591.15
  4. Step 4: Simplify right side
    1,331.31x = 1,180,452.66
  5. Step 5: Solve for x
    x = 1,180,452.66/1,331.31
  6. Step 6: Final answer
    x = 886.69

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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.