Home / 3,854.50-5,781.89-1,081.43

Finding the Fourth Proportional to 3,854.50, 5,781.89 and 1,081.43

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Solution

The fourth proportional to 3,854.50, 5,781.89 and 1,081.43 is: 1,622.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,854.50 : 5,781.89 = 1,081.43 : x
  2. Step 2: Convert to fraction form
    3,854.50/5,781.89 = 1,081.43/x
  3. Step 3: Cross multiply
    3,854.50x = 5,781.89 × 1,081.43
  4. Step 4: Simplify right side
    3,854.50x = 6,252,709.30
  5. Step 5: Solve for x
    x = 6,252,709.30/3,854.50
  6. Step 6: Final answer
    x = 1,622.18

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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.