Home / 3,791.39-5,231.86-2,113.02

Finding the Fourth Proportional to 3,791.39, 5,231.86 and 2,113.02

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Solution

The fourth proportional to 3,791.39, 5,231.86 and 2,113.02 is: 2,915.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.39 : 5,231.86 = 2,113.02 : x
  2. Step 2: Convert to fraction form
    3,791.39/5,231.86 = 2,113.02/x
  3. Step 3: Cross multiply
    3,791.39x = 5,231.86 × 2,113.02
  4. Step 4: Simplify right side
    3,791.39x = 11,055,019.53
  5. Step 5: Solve for x
    x = 11,055,019.53/3,791.39
  6. Step 6: Final answer
    x = 2,915.83

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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.