Home / 3,279.67-4,919.99-1,087.90

Finding the Fourth Proportional to 3,279.67, 4,919.99 and 1,087.90

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Solution

The fourth proportional to 3,279.67, 4,919.99 and 1,087.90 is: 1,632.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.67 : 4,919.99 = 1,087.90 : x
  2. Step 2: Convert to fraction form
    3,279.67/4,919.99 = 1,087.90/x
  3. Step 3: Cross multiply
    3,279.67x = 4,919.99 × 1,087.90
  4. Step 4: Simplify right side
    3,279.67x = 5,352,439.38
  5. Step 5: Solve for x
    x = 5,352,439.38/3,279.67
  6. Step 6: Final answer
    x = 1,632.01

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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.