Home / 3,179.88-4,769.82-1,809

Finding the Fourth Proportional to 3,179.88, 4,769.82 and 1,809

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Solution

The fourth proportional to 3,179.88, 4,769.82 and 1,809 is: 2,713.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.88 : 4,769.82 = 1,809 : x
  2. Step 2: Convert to fraction form
    3,179.88/4,769.82 = 1,809/x
  3. Step 3: Cross multiply
    3,179.88x = 4,769.82 × 1,809
  4. Step 4: Simplify right side
    3,179.88x = 8,628,604.38
  5. Step 5: Solve for x
    x = 8,628,604.38/3,179.88
  6. Step 6: Final answer
    x = 2,713.50

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.