Home / 3,198.78-4,788.81-2,380.68

Finding the Fourth Proportional to 3,198.78, 4,788.81 and 2,380.68

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Solution

The fourth proportional to 3,198.78, 4,788.81 and 2,380.68 is: 3,564.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.78 : 4,788.81 = 2,380.68 : x
  2. Step 2: Convert to fraction form
    3,198.78/4,788.81 = 2,380.68/x
  3. Step 3: Cross multiply
    3,198.78x = 4,788.81 × 2,380.68
  4. Step 4: Simplify right side
    3,198.78x = 11,400,624.19
  5. Step 5: Solve for x
    x = 11,400,624.19/3,198.78
  6. Step 6: Final answer
    x = 3,564.05

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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.