Home / 3,198.56-4,412.80-1,939.18

Finding the Fourth Proportional to 3,198.56, 4,412.80 and 1,939.18

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Solution

The fourth proportional to 3,198.56, 4,412.80 and 1,939.18 is: 2,675.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.56 : 4,412.80 = 1,939.18 : x
  2. Step 2: Convert to fraction form
    3,198.56/4,412.80 = 1,939.18/x
  3. Step 3: Cross multiply
    3,198.56x = 4,412.80 × 1,939.18
  4. Step 4: Simplify right side
    3,198.56x = 8,557,212.42
  5. Step 5: Solve for x
    x = 8,557,212.42/3,198.56
  6. Step 6: Final answer
    x = 2,675.33

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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.