Home / 3,791.49-5,231.56-2,112.85

Finding the Fourth Proportional to 3,791.49, 5,231.56 and 2,112.85

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Solution

The fourth proportional to 3,791.49, 5,231.56 and 2,112.85 is: 2,915.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.49 : 5,231.56 = 2,112.85 : x
  2. Step 2: Convert to fraction form
    3,791.49/5,231.56 = 2,112.85/x
  3. Step 3: Cross multiply
    3,791.49x = 5,231.56 × 2,112.85
  4. Step 4: Simplify right side
    3,791.49x = 11,053,501.55
  5. Step 5: Solve for x
    x = 11,053,501.55/3,791.49
  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.