Home / 3,571.20-5,356.84-1,721.92

Finding the Fourth Proportional to 3,571.20, 5,356.84 and 1,721.92

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Solution

The fourth proportional to 3,571.20, 5,356.84 and 1,721.92 is: 2,582.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.20 : 5,356.84 = 1,721.92 : x
  2. Step 2: Convert to fraction form
    3,571.20/5,356.84 = 1,721.92/x
  3. Step 3: Cross multiply
    3,571.20x = 5,356.84 × 1,721.92
  4. Step 4: Simplify right side
    3,571.20x = 9,224,049.93
  5. Step 5: Solve for x
    x = 9,224,049.93/3,571.20
  6. Step 6: Final answer
    x = 2,582.90

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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.