Home / 1,286.96-1,928.97-1,183.11

Finding the Fourth Proportional to 1,286.96, 1,928.97 and 1,183.11

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Solution

The fourth proportional to 1,286.96, 1,928.97 and 1,183.11 is: 1,773.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.96 : 1,928.97 = 1,183.11 : x
  2. Step 2: Convert to fraction form
    1,286.96/1,928.97 = 1,183.11/x
  3. Step 3: Cross multiply
    1,286.96x = 1,928.97 × 1,183.11
  4. Step 4: Simplify right side
    1,286.96x = 2,282,183.70
  5. Step 5: Solve for x
    x = 2,282,183.70/1,286.96
  6. Step 6: Final answer
    x = 1,773.32

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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.