Home / 3,976.53-5,484.51-2,781.12

Finding the Fourth Proportional to 3,976.53, 5,484.51 and 2,781.12

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Solution

The fourth proportional to 3,976.53, 5,484.51 and 2,781.12 is: 3,835.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.53 : 5,484.51 = 2,781.12 : x
  2. Step 2: Convert to fraction form
    3,976.53/5,484.51 = 2,781.12/x
  3. Step 3: Cross multiply
    3,976.53x = 5,484.51 × 2,781.12
  4. Step 4: Simplify right side
    3,976.53x = 15,253,039.12
  5. Step 5: Solve for x
    x = 15,253,039.12/3,976.53
  6. Step 6: Final answer
    x = 3,835.77

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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.