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Finding the Fourth Proportional to 3,550.44, 4,899.68 and 1,978.60

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Solution

The fourth proportional to 3,550.44, 4,899.68 and 1,978.60 is: 2,730.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,550.44 : 4,899.68 = 1,978.60 : x
  2. Step 2: Convert to fraction form
    3,550.44/4,899.68 = 1,978.60/x
  3. Step 3: Cross multiply
    3,550.44x = 4,899.68 × 1,978.60
  4. Step 4: Simplify right side
    3,550.44x = 9,694,506.85
  5. Step 5: Solve for x
    x = 9,694,506.85/3,550.44
  6. Step 6: Final answer
    x = 2,730.51

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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.