Home / 3,781.10-5,217.89-2,102.66

Finding the Fourth Proportional to 3,781.10, 5,217.89 and 2,102.66

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Solution

The fourth proportional to 3,781.10, 5,217.89 and 2,102.66 is: 2,901.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.10 : 5,217.89 = 2,102.66 : x
  2. Step 2: Convert to fraction form
    3,781.10/5,217.89 = 2,102.66/x
  3. Step 3: Cross multiply
    3,781.10x = 5,217.89 × 2,102.66
  4. Step 4: Simplify right side
    3,781.10x = 10,971,448.59
  5. Step 5: Solve for x
    x = 10,971,448.59/3,781.10
  6. Step 6: Final answer
    x = 2,901.66

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1.5x scale

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.