Home / 3,981.68-5,493.92-2,409.88

Finding the Fourth Proportional to 3,981.68, 5,493.92 and 2,409.88

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Solution

The fourth proportional to 3,981.68, 5,493.92 and 2,409.88 is: 3,325.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.68 : 5,493.92 = 2,409.88 : x
  2. Step 2: Convert to fraction form
    3,981.68/5,493.92 = 2,409.88/x
  3. Step 3: Cross multiply
    3,981.68x = 5,493.92 × 2,409.88
  4. Step 4: Simplify right side
    3,981.68x = 13,239,687.93
  5. Step 5: Solve for x
    x = 13,239,687.93/3,981.68
  6. Step 6: Final answer
    x = 3,325.15

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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.