Home / 3,279.25-4,919.55-1,331.45

Finding the Fourth Proportional to 3,279.25, 4,919.55 and 1,331.45

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Solution

The fourth proportional to 3,279.25, 4,919.55 and 1,331.45 is: 1,997.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.25 : 4,919.55 = 1,331.45 : x
  2. Step 2: Convert to fraction form
    3,279.25/4,919.55 = 1,331.45/x
  3. Step 3: Cross multiply
    3,279.25x = 4,919.55 × 1,331.45
  4. Step 4: Simplify right side
    3,279.25x = 6,550,140.92
  5. Step 5: Solve for x
    x = 6,550,140.92/3,279.25
  6. Step 6: Final answer
    x = 1,997.45

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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.