Home / 3,621.73-5,439.28-2,169.80

Finding the Fourth Proportional to 3,621.73, 5,439.28 and 2,169.80

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Solution

The fourth proportional to 3,621.73, 5,439.28 and 2,169.80 is: 3,258.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.73 : 5,439.28 = 2,169.80 : x
  2. Step 2: Convert to fraction form
    3,621.73/5,439.28 = 2,169.80/x
  3. Step 3: Cross multiply
    3,621.73x = 5,439.28 × 2,169.80
  4. Step 4: Simplify right side
    3,621.73x = 11,802,149.74
  5. Step 5: Solve for x
    x = 11,802,149.74/3,621.73
  6. Step 6: Final answer
    x = 3,258.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.