Home / 3,169.70-4,373.49-1,991.30

Finding the Fourth Proportional to 3,169.70, 4,373.49 and 1,991.30

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Solution

The fourth proportional to 3,169.70, 4,373.49 and 1,991.30 is: 2,747.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,169.70 : 4,373.49 = 1,991.30 : x
  2. Step 2: Convert to fraction form
    3,169.70/4,373.49 = 1,991.30/x
  3. Step 3: Cross multiply
    3,169.70x = 4,373.49 × 1,991.30
  4. Step 4: Simplify right side
    3,169.70x = 8,708,930.64
  5. Step 5: Solve for x
    x = 8,708,930.64/3,169.70
  6. Step 6: Final answer
    x = 2,747.56

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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.