Home / 2,728.64-3,765.40-1,549.69

Finding the Fourth Proportional to 2,728.64, 3,765.40 and 1,549.69

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Solution

The fourth proportional to 2,728.64, 3,765.40 and 1,549.69 is: 2,138.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.64 : 3,765.40 = 1,549.69 : x
  2. Step 2: Convert to fraction form
    2,728.64/3,765.40 = 1,549.69/x
  3. Step 3: Cross multiply
    2,728.64x = 3,765.40 × 1,549.69
  4. Step 4: Simplify right side
    2,728.64x = 5,835,202.73
  5. Step 5: Solve for x
    x = 5,835,202.73/2,728.64
  6. Step 6: Final answer
    x = 2,138.50

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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.