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Finding the Fourth Proportional to 3,618.80, 4,993.92 and 2,046.88

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Solution

The fourth proportional to 3,618.80, 4,993.92 and 2,046.88 is: 2,824.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.80 : 4,993.92 = 2,046.88 : x
  2. Step 2: Convert to fraction form
    3,618.80/4,993.92 = 2,046.88/x
  3. Step 3: Cross multiply
    3,618.80x = 4,993.92 × 2,046.88
  4. Step 4: Simplify right side
    3,618.80x = 10,221,954.97
  5. Step 5: Solve for x
    x = 10,221,954.97/3,618.80
  6. Step 6: Final answer
    x = 2,824.68

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1.5x scale

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.