Home / 4,072.75-5,620.40-2,209.75

Finding the Fourth Proportional to 4,072.75, 5,620.40 and 2,209.75

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Solution

The fourth proportional to 4,072.75, 5,620.40 and 2,209.75 is: 3,049.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,072.75 : 5,620.40 = 2,209.75 : x
  2. Step 2: Convert to fraction form
    4,072.75/5,620.40 = 2,209.75/x
  3. Step 3: Cross multiply
    4,072.75x = 5,620.40 × 2,209.75
  4. Step 4: Simplify right side
    4,072.75x = 12,419,678.90
  5. Step 5: Solve for x
    x = 12,419,678.90/4,072.75
  6. Step 6: Final answer
    x = 3,049.46

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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.