Home / 3,881.11-5,355.94-2,112.71

Finding the Fourth Proportional to 3,881.11, 5,355.94 and 2,112.71

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Solution

The fourth proportional to 3,881.11, 5,355.94 and 2,112.71 is: 2,915.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.11 : 5,355.94 = 2,112.71 : x
  2. Step 2: Convert to fraction form
    3,881.11/5,355.94 = 2,112.71/x
  3. Step 3: Cross multiply
    3,881.11x = 5,355.94 × 2,112.71
  4. Step 4: Simplify right side
    3,881.11x = 11,315,548.00
  5. Step 5: Solve for x
    x = 11,315,548.00/3,881.11
  6. Step 6: Final answer
    x = 2,915.54

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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.