Home / 3,863.89-5,791.65-1,785.43

Finding the Fourth Proportional to 3,863.89, 5,791.65 and 1,785.43

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Solution

The fourth proportional to 3,863.89, 5,791.65 and 1,785.43 is: 2,676.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.89 : 5,791.65 = 1,785.43 : x
  2. Step 2: Convert to fraction form
    3,863.89/5,791.65 = 1,785.43/x
  3. Step 3: Cross multiply
    3,863.89x = 5,791.65 × 1,785.43
  4. Step 4: Simplify right side
    3,863.89x = 10,340,585.66
  5. Step 5: Solve for x
    x = 10,340,585.66/3,863.89
  6. Step 6: Final answer
    x = 2,676.21

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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.