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Finding the Fourth Proportional to 2,728.52, 4,092.78 and 1,266.88

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Solution

The fourth proportional to 2,728.52, 4,092.78 and 1,266.88 is: 1,900.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.52 : 4,092.78 = 1,266.88 : x
  2. Step 2: Convert to fraction form
    2,728.52/4,092.78 = 1,266.88/x
  3. Step 3: Cross multiply
    2,728.52x = 4,092.78 × 1,266.88
  4. Step 4: Simplify right side
    2,728.52x = 5,185,061.13
  5. Step 5: Solve for x
    x = 5,185,061.13/2,728.52
  6. Step 6: Final answer
    x = 1,900.32

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1.5x scale

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.