Home / 1,331.24-1,997.80-591.05

Finding the Fourth Proportional to 1,331.24, 1,997.80 and 591.05

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Solution

The fourth proportional to 1,331.24, 1,997.80 and 591.05 is: 886.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.24 : 1,997.80 = 591.05 : x
  2. Step 2: Convert to fraction form
    1,331.24/1,997.80 = 591.05/x
  3. Step 3: Cross multiply
    1,331.24x = 1,997.80 × 591.05
  4. Step 4: Simplify right side
    1,331.24x = 1,180,791.97
  5. Step 5: Solve for x
    x = 1,180,791.97/1,331.24
  6. Step 6: Final answer
    x = 886.99

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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.