Home / 3,972.43-5,480.96-2,479.80

Finding the Fourth Proportional to 3,972.43, 5,480.96 and 2,479.80

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Solution

The fourth proportional to 3,972.43, 5,480.96 and 2,479.80 is: 3,421.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.43 : 5,480.96 = 2,479.80 : x
  2. Step 2: Convert to fraction form
    3,972.43/5,480.96 = 2,479.80/x
  3. Step 3: Cross multiply
    3,972.43x = 5,480.96 × 2,479.80
  4. Step 4: Simplify right side
    3,972.43x = 13,591,684.61
  5. Step 5: Solve for x
    x = 13,591,684.61/3,972.43
  6. Step 6: Final answer
    x = 3,421.50

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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.