Home / 3,949.68-5,450.76-2,181.48

Finding the Fourth Proportional to 3,949.68, 5,450.76 and 2,181.48

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Solution

The fourth proportional to 3,949.68, 5,450.76 and 2,181.48 is: 3,010.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.68 : 5,450.76 = 2,181.48 : x
  2. Step 2: Convert to fraction form
    3,949.68/5,450.76 = 2,181.48/x
  3. Step 3: Cross multiply
    3,949.68x = 5,450.76 × 2,181.48
  4. Step 4: Simplify right side
    3,949.68x = 11,890,723.92
  5. Step 5: Solve for x
    x = 11,890,723.92/3,949.68
  6. Step 6: Final answer
    x = 3,010.55

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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.