Home / 4,072.78-5,620.44-2,209.78

Finding the Fourth Proportional to 4,072.78, 5,620.44 and 2,209.78

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Solution

The fourth proportional to 4,072.78, 5,620.44 and 2,209.78 is: 3,049.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,072.78 : 5,620.44 = 2,209.78 : x
  2. Step 2: Convert to fraction form
    4,072.78/5,620.44 = 2,209.78/x
  3. Step 3: Cross multiply
    4,072.78x = 5,620.44 × 2,209.78
  4. Step 4: Simplify right side
    4,072.78x = 12,419,938.79
  5. Step 5: Solve for x
    x = 12,419,938.79/4,072.78
  6. Step 6: Final answer
    x = 3,049.50

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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.