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Finding the Fourth Proportional to 3,849, 5,311.20 and 2,356.20

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Solution

The fourth proportional to 3,849, 5,311.20 and 2,356.20 is: 3,251.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849 : 5,311.20 = 2,356.20 : x
  2. Step 2: Convert to fraction form
    3,849/5,311.20 = 2,356.20/x
  3. Step 3: Cross multiply
    3,849x = 5,311.20 × 2,356.20
  4. Step 4: Simplify right side
    3,849x = 12,514,249.44
  5. Step 5: Solve for x
    x = 12,514,249.44/3,849
  6. Step 6: Final answer
    x = 3,251.30

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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.