Home / 2,519.18-3,781.11-1,287.47

Finding the Fourth Proportional to 2,519.18, 3,781.11 and 1,287.47

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Solution

The fourth proportional to 2,519.18, 3,781.11 and 1,287.47 is: 1,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.18 : 3,781.11 = 1,287.47 : x
  2. Step 2: Convert to fraction form
    2,519.18/3,781.11 = 1,287.47/x
  3. Step 3: Cross multiply
    2,519.18x = 3,781.11 × 1,287.47
  4. Step 4: Simplify right side
    2,519.18x = 4,868,046.79
  5. Step 5: Solve for x
    x = 4,868,046.79/2,519.18
  6. Step 6: Final answer
    x = 1,932.40

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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.