Home / 2,205.85-3,304.45-1,279.47

Finding the Fourth Proportional to 2,205.85, 3,304.45 and 1,279.47

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Solution

The fourth proportional to 2,205.85, 3,304.45 and 1,279.47 is: 1,916.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.85 : 3,304.45 = 1,279.47 : x
  2. Step 2: Convert to fraction form
    2,205.85/3,304.45 = 1,279.47/x
  3. Step 3: Cross multiply
    2,205.85x = 3,304.45 × 1,279.47
  4. Step 4: Simplify right side
    2,205.85x = 4,227,928.12
  5. Step 5: Solve for x
    x = 4,227,928.12/2,205.85
  6. Step 6: Final answer
    x = 1,916.69

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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.