Home / 3,791.09-5,231.68-2,112.41

Finding the Fourth Proportional to 3,791.09, 5,231.68 and 2,112.41

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Solution

The fourth proportional to 3,791.09, 5,231.68 and 2,112.41 is: 2,915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.09 : 5,231.68 = 2,112.41 : x
  2. Step 2: Convert to fraction form
    3,791.09/5,231.68 = 2,112.41/x
  3. Step 3: Cross multiply
    3,791.09x = 5,231.68 × 2,112.41
  4. Step 4: Simplify right side
    3,791.09x = 11,051,460.95
  5. Step 5: Solve for x
    x = 11,051,460.95/3,791.09
  6. Step 6: Final answer
    x = 2,915.11

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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.