Home / 3,238.38-4,469.07-1,912.11

Finding the Fourth Proportional to 3,238.38, 4,469.07 and 1,912.11

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Solution

The fourth proportional to 3,238.38, 4,469.07 and 1,912.11 is: 2,638.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238.38 : 4,469.07 = 1,912.11 : x
  2. Step 2: Convert to fraction form
    3,238.38/4,469.07 = 1,912.11/x
  3. Step 3: Cross multiply
    3,238.38x = 4,469.07 × 1,912.11
  4. Step 4: Simplify right side
    3,238.38x = 8,545,343.85
  5. Step 5: Solve for x
    x = 8,545,343.85/3,238.38
  6. Step 6: Final answer
    x = 2,638.77

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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.