Home / 2,728.05-4,092.65-879.36

Finding the Fourth Proportional to 2,728.05, 4,092.65 and 879.36

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Solution

The fourth proportional to 2,728.05, 4,092.65 and 879.36 is: 1,319.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.05 : 4,092.65 = 879.36 : x
  2. Step 2: Convert to fraction form
    2,728.05/4,092.65 = 879.36/x
  3. Step 3: Cross multiply
    2,728.05x = 4,092.65 × 879.36
  4. Step 4: Simplify right side
    2,728.05x = 3,598,898.73
  5. Step 5: Solve for x
    x = 3,598,898.73/2,728.05
  6. Step 6: Final answer
    x = 1,319.22

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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.