Home / 4,121.28-5,682.96-2,721.60

Finding the Fourth Proportional to 4,121.28, 5,682.96 and 2,721.60

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Solution

The fourth proportional to 4,121.28, 5,682.96 and 2,721.60 is: 3,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.28 : 5,682.96 = 2,721.60 : x
  2. Step 2: Convert to fraction form
    4,121.28/5,682.96 = 2,721.60/x
  3. Step 3: Cross multiply
    4,121.28x = 5,682.96 × 2,721.60
  4. Step 4: Simplify right side
    4,121.28x = 15,466,743.94
  5. Step 5: Solve for x
    x = 15,466,743.94/4,121.28
  6. Step 6: Final answer
    x = 3,752.90

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1.5x scale

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.