Home / 2,747.76-4,119.68-1,286.12

Finding the Fourth Proportional to 2,747.76, 4,119.68 and 1,286.12

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Solution

The fourth proportional to 2,747.76, 4,119.68 and 1,286.12 is: 1,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.76 : 4,119.68 = 1,286.12 : x
  2. Step 2: Convert to fraction form
    2,747.76/4,119.68 = 1,286.12/x
  3. Step 3: Cross multiply
    2,747.76x = 4,119.68 × 1,286.12
  4. Step 4: Simplify right side
    2,747.76x = 5,298,375.81
  5. Step 5: Solve for x
    x = 5,298,375.81/2,747.76
  6. Step 6: Final answer
    x = 1,928.25

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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.