Home / 1,839.20-2,758.82-540.69

Finding the Fourth Proportional to 1,839.20, 2,758.82 and 540.69

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Solution

The fourth proportional to 1,839.20, 2,758.82 and 540.69 is: 811.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,839.20 : 2,758.82 = 540.69 : x
  2. Step 2: Convert to fraction form
    1,839.20/2,758.82 = 540.69/x
  3. Step 3: Cross multiply
    1,839.20x = 2,758.82 × 540.69
  4. Step 4: Simplify right side
    1,839.20x = 1,491,663.68
  5. Step 5: Solve for x
    x = 1,491,663.68/1,839.20
  6. Step 6: Final answer
    x = 811.04

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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.