Home / 1,591.28-2,387.15-495.75

Finding the Fourth Proportional to 1,591.28, 2,387.15 and 495.75

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Solution

The fourth proportional to 1,591.28, 2,387.15 and 495.75 is: 743.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591.28 : 2,387.15 = 495.75 : x
  2. Step 2: Convert to fraction form
    1,591.28/2,387.15 = 495.75/x
  3. Step 3: Cross multiply
    1,591.28x = 2,387.15 × 495.75
  4. Step 4: Simplify right side
    1,591.28x = 1,183,427.13
  5. Step 5: Solve for x
    x = 1,183,427.13/1,591.28
  6. Step 6: Final answer
    x = 743.70

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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.