Home / 3,469.30-5,205.98-1,279.55

Finding the Fourth Proportional to 3,469.30, 5,205.98 and 1,279.55

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Solution

The fourth proportional to 3,469.30, 5,205.98 and 1,279.55 is: 1,920.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.30 : 5,205.98 = 1,279.55 : x
  2. Step 2: Convert to fraction form
    3,469.30/5,205.98 = 1,279.55/x
  3. Step 3: Cross multiply
    3,469.30x = 5,205.98 × 1,279.55
  4. Step 4: Simplify right side
    3,469.30x = 6,661,327.92
  5. Step 5: Solve for x
    x = 6,661,327.92/3,469.30
  6. Step 6: Final answer
    x = 1,920.08

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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.