Home / 3,785.61-5,223.78-2,791.43

Finding the Fourth Proportional to 3,785.61, 5,223.78 and 2,791.43

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Solution

The fourth proportional to 3,785.61, 5,223.78 and 2,791.43 is: 3,851.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.61 : 5,223.78 = 2,791.43 : x
  2. Step 2: Convert to fraction form
    3,785.61/5,223.78 = 2,791.43/x
  3. Step 3: Cross multiply
    3,785.61x = 5,223.78 × 2,791.43
  4. Step 4: Simplify right side
    3,785.61x = 14,581,790.09
  5. Step 5: Solve for x
    x = 14,581,790.09/3,785.61
  6. Step 6: Final answer
    x = 3,851.90

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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.