Home / 2,212.56-3,319.28-1,805.28

Finding the Fourth Proportional to 2,212.56, 3,319.28 and 1,805.28

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Solution

The fourth proportional to 2,212.56, 3,319.28 and 1,805.28 is: 2,708.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.56 : 3,319.28 = 1,805.28 : x
  2. Step 2: Convert to fraction form
    2,212.56/3,319.28 = 1,805.28/x
  3. Step 3: Cross multiply
    2,212.56x = 3,319.28 × 1,805.28
  4. Step 4: Simplify right side
    2,212.56x = 5,992,229.80
  5. Step 5: Solve for x
    x = 5,992,229.80/2,212.56
  6. Step 6: Final answer
    x = 2,708.28

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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.