Home / 3,791.38-5,231.94-2,112.64

Finding the Fourth Proportional to 3,791.38, 5,231.94 and 2,112.64

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Solution

The fourth proportional to 3,791.38, 5,231.94 and 2,112.64 is: 2,915.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.38 : 5,231.94 = 2,112.64 : x
  2. Step 2: Convert to fraction form
    3,791.38/5,231.94 = 2,112.64/x
  3. Step 3: Cross multiply
    3,791.38x = 5,231.94 × 2,112.64
  4. Step 4: Simplify right side
    3,791.38x = 11,053,205.72
  5. Step 5: Solve for x
    x = 11,053,205.72/3,791.38
  6. Step 6: Final answer
    x = 2,915.35

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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.