Home / 2,211.20-3,049.44-1,769.12

Finding the Fourth Proportional to 2,211.20, 3,049.44 and 1,769.12

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Solution

The fourth proportional to 2,211.20, 3,049.44 and 1,769.12 is: 2,439.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.20 : 3,049.44 = 1,769.12 : x
  2. Step 2: Convert to fraction form
    2,211.20/3,049.44 = 1,769.12/x
  3. Step 3: Cross multiply
    2,211.20x = 3,049.44 × 1,769.12
  4. Step 4: Simplify right side
    2,211.20x = 5,394,825.29
  5. Step 5: Solve for x
    x = 5,394,825.29/2,211.20
  6. Step 6: Final answer
    x = 2,439.77

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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.