Home / 3,791.40-5,231.94-2,112.36

Finding the Fourth Proportional to 3,791.40, 5,231.94 and 2,112.36

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Solution

The fourth proportional to 3,791.40, 5,231.94 and 2,112.36 is: 2,914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.40 : 5,231.94 = 2,112.36 : x
  2. Step 2: Convert to fraction form
    3,791.40/5,231.94 = 2,112.36/x
  3. Step 3: Cross multiply
    3,791.40x = 5,231.94 × 2,112.36
  4. Step 4: Simplify right side
    3,791.40x = 11,051,740.78
  5. Step 5: Solve for x
    x = 11,051,740.78/3,791.40
  6. Step 6: Final answer
    x = 2,914.95

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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.