Home / 1,613.20-2,226.36-949.72

Finding the Fourth Proportional to 1,613.20, 2,226.36 and 949.72

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Solution

The fourth proportional to 1,613.20, 2,226.36 and 949.72 is: 1,310.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.20 : 2,226.36 = 949.72 : x
  2. Step 2: Convert to fraction form
    1,613.20/2,226.36 = 949.72/x
  3. Step 3: Cross multiply
    1,613.20x = 2,226.36 × 949.72
  4. Step 4: Simplify right side
    1,613.20x = 2,114,418.62
  5. Step 5: Solve for x
    x = 2,114,418.62/1,613.20
  6. Step 6: Final answer
    x = 1,310.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.