Home / 2,279.30-3,418.90-635.80

Finding the Fourth Proportional to 2,279.30, 3,418.90 and 635.80

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Solution

The fourth proportional to 2,279.30, 3,418.90 and 635.80 is: 953.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.30 : 3,418.90 = 635.80 : x
  2. Step 2: Convert to fraction form
    2,279.30/3,418.90 = 635.80/x
  3. Step 3: Cross multiply
    2,279.30x = 3,418.90 × 635.80
  4. Step 4: Simplify right side
    2,279.30x = 2,173,736.62
  5. Step 5: Solve for x
    x = 2,173,736.62/2,279.30
  6. Step 6: Final answer
    x = 953.69

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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.