Home / 2,481.28-3,716.88-1,178.80

Finding the Fourth Proportional to 2,481.28, 3,716.88 and 1,178.80

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Solution

The fourth proportional to 2,481.28, 3,716.88 and 1,178.80 is: 1,765.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.28 : 3,716.88 = 1,178.80 : x
  2. Step 2: Convert to fraction form
    2,481.28/3,716.88 = 1,178.80/x
  3. Step 3: Cross multiply
    2,481.28x = 3,716.88 × 1,178.80
  4. Step 4: Simplify right side
    2,481.28x = 4,381,458.14
  5. Step 5: Solve for x
    x = 4,381,458.14/2,481.28
  6. Step 6: Final answer
    x = 1,765.81

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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.