Home / 2,519.18-3,781.07-1,287.45

Finding the Fourth Proportional to 2,519.18, 3,781.07 and 1,287.45

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Solution

The fourth proportional to 2,519.18, 3,781.07 and 1,287.45 is: 1,932.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.18 : 3,781.07 = 1,287.45 : x
  2. Step 2: Convert to fraction form
    2,519.18/3,781.07 = 1,287.45/x
  3. Step 3: Cross multiply
    2,519.18x = 3,781.07 × 1,287.45
  4. Step 4: Simplify right side
    2,519.18x = 4,867,936.96
  5. Step 5: Solve for x
    x = 4,867,936.96/2,519.18
  6. Step 6: Final answer
    x = 1,932.35

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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.