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Finding the Fourth Proportional to 2,728.94, 3,765.90 and 1,549.94

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Solution

The fourth proportional to 2,728.94, 3,765.90 and 1,549.94 is: 2,138.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.94 : 3,765.90 = 1,549.94 : x
  2. Step 2: Convert to fraction form
    2,728.94/3,765.90 = 1,549.94/x
  3. Step 3: Cross multiply
    2,728.94x = 3,765.90 × 1,549.94
  4. Step 4: Simplify right side
    2,728.94x = 5,836,919.05
  5. Step 5: Solve for x
    x = 5,836,919.05/2,728.94
  6. Step 6: Final answer
    x = 2,138.90

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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.