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Finding the Fourth Proportional to 3,879.82, 5,819.68 and 2,644.16

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Solution

The fourth proportional to 3,879.82, 5,819.68 and 2,644.16 is: 3,966.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.82 : 5,819.68 = 2,644.16 : x
  2. Step 2: Convert to fraction form
    3,879.82/5,819.68 = 2,644.16/x
  3. Step 3: Cross multiply
    3,879.82x = 5,819.68 × 2,644.16
  4. Step 4: Simplify right side
    3,879.82x = 15,388,165.07
  5. Step 5: Solve for x
    x = 15,388,165.07/3,879.82
  6. Step 6: Final answer
    x = 3,966.21

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1.5x scale

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.