Home / 2,819.80-4,231.14-1,996.30

Finding the Fourth Proportional to 2,819.80, 4,231.14 and 1,996.30

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Solution

The fourth proportional to 2,819.80, 4,231.14 and 1,996.30 is: 2,995.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.80 : 4,231.14 = 1,996.30 : x
  2. Step 2: Convert to fraction form
    2,819.80/4,231.14 = 1,996.30/x
  3. Step 3: Cross multiply
    2,819.80x = 4,231.14 × 1,996.30
  4. Step 4: Simplify right side
    2,819.80x = 8,446,624.78
  5. Step 5: Solve for x
    x = 8,446,624.78/2,819.80
  6. Step 6: Final answer
    x = 2,995.47

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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.