Home / 1,286.73-1,932.37-1,183.79

Finding the Fourth Proportional to 1,286.73, 1,932.37 and 1,183.79

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Solution

The fourth proportional to 1,286.73, 1,932.37 and 1,183.79 is: 1,777.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.73 : 1,932.37 = 1,183.79 : x
  2. Step 2: Convert to fraction form
    1,286.73/1,932.37 = 1,183.79/x
  3. Step 3: Cross multiply
    1,286.73x = 1,932.37 × 1,183.79
  4. Step 4: Simplify right side
    1,286.73x = 2,287,522.15
  5. Step 5: Solve for x
    x = 2,287,522.15/1,286.73
  6. Step 6: Final answer
    x = 1,777.78

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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.