Home / 3,781.87-5,218.85-2,103.24

Finding the Fourth Proportional to 3,781.87, 5,218.85 and 2,103.24

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Solution

The fourth proportional to 3,781.87, 5,218.85 and 2,103.24 is: 2,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.87 : 5,218.85 = 2,103.24 : x
  2. Step 2: Convert to fraction form
    3,781.87/5,218.85 = 2,103.24/x
  3. Step 3: Cross multiply
    3,781.87x = 5,218.85 × 2,103.24
  4. Step 4: Simplify right side
    3,781.87x = 10,976,499.33
  5. Step 5: Solve for x
    x = 10,976,499.33/3,781.87
  6. Step 6: Final answer
    x = 2,902.40

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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.