Home / 2,212.56-3,315.60-1,344.78

Finding the Fourth Proportional to 2,212.56, 3,315.60 and 1,344.78

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Solution

The fourth proportional to 2,212.56, 3,315.60 and 1,344.78 is: 2,015.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.56 : 3,315.60 = 1,344.78 : x
  2. Step 2: Convert to fraction form
    2,212.56/3,315.60 = 1,344.78/x
  3. Step 3: Cross multiply
    2,212.56x = 3,315.60 × 1,344.78
  4. Step 4: Simplify right side
    2,212.56x = 4,458,752.57
  5. Step 5: Solve for x
    x = 4,458,752.57/2,212.56
  6. Step 6: Final answer
    x = 2,015.20

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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.