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Finding the Fourth Proportional to 2,728.04, 4,092.06 and 879.29

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Solution

The fourth proportional to 2,728.04, 4,092.06 and 879.29 is: 1,318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.04 : 4,092.06 = 879.29 : x
  2. Step 2: Convert to fraction form
    2,728.04/4,092.06 = 879.29/x
  3. Step 3: Cross multiply
    2,728.04x = 4,092.06 × 879.29
  4. Step 4: Simplify right side
    2,728.04x = 3,598,086.98
  5. Step 5: Solve for x
    x = 3,598,086.98/2,728.04
  6. Step 6: Final answer
    x = 1,318.93

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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.