Home / 3,976.43-5,484.38-2,781.02

Finding the Fourth Proportional to 3,976.43, 5,484.38 and 2,781.02

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Solution

The fourth proportional to 3,976.43, 5,484.38 and 2,781.02 is: 3,835.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.43 : 5,484.38 = 2,781.02 : x
  2. Step 2: Convert to fraction form
    3,976.43/5,484.38 = 2,781.02/x
  3. Step 3: Cross multiply
    3,976.43x = 5,484.38 × 2,781.02
  4. Step 4: Simplify right side
    3,976.43x = 15,252,170.27
  5. Step 5: Solve for x
    x = 15,252,170.27/3,976.43
  6. Step 6: Final answer
    x = 3,835.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.