Home / 2,213.28-3,319.92-674.28

Finding the Fourth Proportional to 2,213.28, 3,319.92 and 674.28

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Solution

The fourth proportional to 2,213.28, 3,319.92 and 674.28 is: 1,011.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.28 : 3,319.92 = 674.28 : x
  2. Step 2: Convert to fraction form
    2,213.28/3,319.92 = 674.28/x
  3. Step 3: Cross multiply
    2,213.28x = 3,319.92 × 674.28
  4. Step 4: Simplify right side
    2,213.28x = 2,238,555.66
  5. Step 5: Solve for x
    x = 2,238,555.66/2,213.28
  6. Step 6: Final answer
    x = 1,011.42

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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.