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Finding the Fourth Proportional to 3,618.54, 4,993.74 and 2,046.78

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Solution

The fourth proportional to 3,618.54, 4,993.74 and 2,046.78 is: 2,824.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.54 : 4,993.74 = 2,046.78 : x
  2. Step 2: Convert to fraction form
    3,618.54/4,993.74 = 2,046.78/x
  3. Step 3: Cross multiply
    3,618.54x = 4,993.74 × 2,046.78
  4. Step 4: Simplify right side
    3,618.54x = 10,221,087.16
  5. Step 5: Solve for x
    x = 10,221,087.16/3,618.54
  6. Step 6: Final answer
    x = 2,824.64

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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.