Home / 3,240.11-4,469.81-1,912.92

Finding the Fourth Proportional to 3,240.11, 4,469.81 and 1,912.92

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Solution

The fourth proportional to 3,240.11, 4,469.81 and 1,912.92 is: 2,638.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.11 : 4,469.81 = 1,912.92 : x
  2. Step 2: Convert to fraction form
    3,240.11/4,469.81 = 1,912.92/x
  3. Step 3: Cross multiply
    3,240.11x = 4,469.81 × 1,912.92
  4. Step 4: Simplify right side
    3,240.11x = 8,550,379.38
  5. Step 5: Solve for x
    x = 8,550,379.38/3,240.11
  6. Step 6: Final answer
    x = 2,638.92

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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.