Home / 3,489.80-4,816.19-1,998.18

Finding the Fourth Proportional to 3,489.80, 4,816.19 and 1,998.18

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Solution

The fourth proportional to 3,489.80, 4,816.19 and 1,998.18 is: 2,757.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.80 : 4,816.19 = 1,998.18 : x
  2. Step 2: Convert to fraction form
    3,489.80/4,816.19 = 1,998.18/x
  3. Step 3: Cross multiply
    3,489.80x = 4,816.19 × 1,998.18
  4. Step 4: Simplify right side
    3,489.80x = 9,623,604.54
  5. Step 5: Solve for x
    x = 9,623,604.54/3,489.80
  6. Step 6: Final answer
    x = 2,757.64

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Half scale
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Double scale
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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.