Home / 3,971.68-5,480.60-2,179.03

Finding the Fourth Proportional to 3,971.68, 5,480.60 and 2,179.03

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Solution

The fourth proportional to 3,971.68, 5,480.60 and 2,179.03 is: 3,006.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.68 : 5,480.60 = 2,179.03 : x
  2. Step 2: Convert to fraction form
    3,971.68/5,480.60 = 2,179.03/x
  3. Step 3: Cross multiply
    3,971.68x = 5,480.60 × 2,179.03
  4. Step 4: Simplify right side
    3,971.68x = 11,942,371.28
  5. Step 5: Solve for x
    x = 11,942,371.28/3,971.68
  6. Step 6: Final answer
    x = 3,006.88

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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.