Home / 3,849.78-5,781.18-2,517.78

Finding the Fourth Proportional to 3,849.78, 5,781.18 and 2,517.78

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Solution

The fourth proportional to 3,849.78, 5,781.18 and 2,517.78 is: 3,780.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.78 : 5,781.18 = 2,517.78 : x
  2. Step 2: Convert to fraction form
    3,849.78/5,781.18 = 2,517.78/x
  3. Step 3: Cross multiply
    3,849.78x = 5,781.18 × 2,517.78
  4. Step 4: Simplify right side
    3,849.78x = 14,555,739.38
  5. Step 5: Solve for x
    x = 14,555,739.38/3,849.78
  6. Step 6: Final answer
    x = 3,780.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.