Home / 3,881.01-5,355.61-2,112.61

Finding the Fourth Proportional to 3,881.01, 5,355.61 and 2,112.61

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Solution

The fourth proportional to 3,881.01, 5,355.61 and 2,112.61 is: 2,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.01 : 5,355.61 = 2,112.61 : x
  2. Step 2: Convert to fraction form
    3,881.01/5,355.61 = 2,112.61/x
  3. Step 3: Cross multiply
    3,881.01x = 5,355.61 × 2,112.61
  4. Step 4: Simplify right side
    3,881.01x = 11,314,315.24
  5. Step 5: Solve for x
    x = 11,314,315.24/3,881.01
  6. Step 6: Final answer
    x = 2,915.30

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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.