Home / 3,791.12-5,231.61-2,112.39

Finding the Fourth Proportional to 3,791.12, 5,231.61 and 2,112.39

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Solution

The fourth proportional to 3,791.12, 5,231.61 and 2,112.39 is: 2,915.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.12 : 5,231.61 = 2,112.39 : x
  2. Step 2: Convert to fraction form
    3,791.12/5,231.61 = 2,112.39/x
  3. Step 3: Cross multiply
    3,791.12x = 5,231.61 × 2,112.39
  4. Step 4: Simplify right side
    3,791.12x = 11,051,200.65
  5. Step 5: Solve for x
    x = 11,051,200.65/3,791.12
  6. Step 6: Final answer
    x = 2,915.03

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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.