Home / 3,881.24-5,356.25-2,112.97

Finding the Fourth Proportional to 3,881.24, 5,356.25 and 2,112.97

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Solution

The fourth proportional to 3,881.24, 5,356.25 and 2,112.97 is: 2,915.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.24 : 5,356.25 = 2,112.97 : x
  2. Step 2: Convert to fraction form
    3,881.24/5,356.25 = 2,112.97/x
  3. Step 3: Cross multiply
    3,881.24x = 5,356.25 × 2,112.97
  4. Step 4: Simplify right side
    3,881.24x = 11,317,585.00
  5. Step 5: Solve for x
    x = 11,317,585.00/3,881.24
  6. Step 6: Final answer
    x = 2,915.98

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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.