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Finding the Fourth Proportional to 3,618.75, 4,993.92 and 1,962.75

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Solution

The fourth proportional to 3,618.75, 4,993.92 and 1,962.75 is: 2,708.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.75 : 4,993.92 = 1,962.75 : x
  2. Step 2: Convert to fraction form
    3,618.75/4,993.92 = 1,962.75/x
  3. Step 3: Cross multiply
    3,618.75x = 4,993.92 × 1,962.75
  4. Step 4: Simplify right side
    3,618.75x = 9,801,816.48
  5. Step 5: Solve for x
    x = 9,801,816.48/3,618.75
  6. Step 6: Final answer
    x = 2,708.62

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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.