Home / 3,645.20-5,470.23-2,721.80

Finding the Fourth Proportional to 3,645.20, 5,470.23 and 2,721.80

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Solution

The fourth proportional to 3,645.20, 5,470.23 and 2,721.80 is: 4,084.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,645.20 : 5,470.23 = 2,721.80 : x
  2. Step 2: Convert to fraction form
    3,645.20/5,470.23 = 2,721.80/x
  3. Step 3: Cross multiply
    3,645.20x = 5,470.23 × 2,721.80
  4. Step 4: Simplify right side
    3,645.20x = 14,888,872.01
  5. Step 5: Solve for x
    x = 14,888,872.01/3,645.20
  6. Step 6: Final answer
    x = 4,084.51

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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.