Home / 5,481.38-8,217.96-1,781.40

Finding the Fourth Proportional to 5,481.38, 8,217.96 and 1,781.40

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Solution

The fourth proportional to 5,481.38, 8,217.96 and 1,781.40 is: 2,670.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.38 : 8,217.96 = 1,781.40 : x
  2. Step 2: Convert to fraction form
    5,481.38/8,217.96 = 1,781.40/x
  3. Step 3: Cross multiply
    5,481.38x = 8,217.96 × 1,781.40
  4. Step 4: Simplify right side
    5,481.38x = 14,639,473.94
  5. Step 5: Solve for x
    x = 14,639,473.94/5,481.38
  6. Step 6: Final answer
    x = 2,670.77

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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.