Home / 2,209.34-3,313.78-822.42

Finding the Fourth Proportional to 2,209.34, 3,313.78 and 822.42

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Solution

The fourth proportional to 2,209.34, 3,313.78 and 822.42 is: 1,233.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.34 : 3,313.78 = 822.42 : x
  2. Step 2: Convert to fraction form
    2,209.34/3,313.78 = 822.42/x
  3. Step 3: Cross multiply
    2,209.34x = 3,313.78 × 822.42
  4. Step 4: Simplify right side
    2,209.34x = 2,725,318.95
  5. Step 5: Solve for x
    x = 2,725,318.95/2,209.34
  6. Step 6: Final answer
    x = 1,233.54

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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.