Home / 3,971.87-5,481.22-2,179.35

Finding the Fourth Proportional to 3,971.87, 5,481.22 and 2,179.35

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Solution

The fourth proportional to 3,971.87, 5,481.22 and 2,179.35 is: 3,007.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.87 : 5,481.22 = 2,179.35 : x
  2. Step 2: Convert to fraction form
    3,971.87/5,481.22 = 2,179.35/x
  3. Step 3: Cross multiply
    3,971.87x = 5,481.22 × 2,179.35
  4. Step 4: Simplify right side
    3,971.87x = 11,945,495.44
  5. Step 5: Solve for x
    x = 11,945,495.44/3,971.87
  6. Step 6: Final answer
    x = 3,007.53

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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.