Home / 3,781.35-5,218.16-2,102.66

Finding the Fourth Proportional to 3,781.35, 5,218.16 and 2,102.66

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Solution

The fourth proportional to 3,781.35, 5,218.16 and 2,102.66 is: 2,901.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.35 : 5,218.16 = 2,102.66 : x
  2. Step 2: Convert to fraction form
    3,781.35/5,218.16 = 2,102.66/x
  3. Step 3: Cross multiply
    3,781.35x = 5,218.16 × 2,102.66
  4. Step 4: Simplify right side
    3,781.35x = 10,971,999.27
  5. Step 5: Solve for x
    x = 10,971,999.27/3,781.35
  6. Step 6: Final answer
    x = 2,901.61

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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.