Home / 3,279.69-4,919.54-1,331.44

Finding the Fourth Proportional to 3,279.69, 4,919.54 and 1,331.44

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Solution

The fourth proportional to 3,279.69, 4,919.54 and 1,331.44 is: 1,997.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.69 : 4,919.54 = 1,331.44 : x
  2. Step 2: Convert to fraction form
    3,279.69/4,919.54 = 1,331.44/x
  3. Step 3: Cross multiply
    3,279.69x = 4,919.54 × 1,331.44
  4. Step 4: Simplify right side
    3,279.69x = 6,550,053.38
  5. Step 5: Solve for x
    x = 6,550,053.38/3,279.69
  6. Step 6: Final answer
    x = 1,997.16

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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.