Home / 2,728.28-3,765.22-1,549.60

Finding the Fourth Proportional to 2,728.28, 3,765.22 and 1,549.60

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Solution

The fourth proportional to 2,728.28, 3,765.22 and 1,549.60 is: 2,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.28 : 3,765.22 = 1,549.60 : x
  2. Step 2: Convert to fraction form
    2,728.28/3,765.22 = 1,549.60/x
  3. Step 3: Cross multiply
    2,728.28x = 3,765.22 × 1,549.60
  4. Step 4: Simplify right side
    2,728.28x = 5,834,571.62
  5. Step 5: Solve for x
    x = 5,834,571.62/2,728.28
  6. Step 6: Final answer
    x = 2,138.55

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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.