Home / 3,240.40-4,469.38-2,119.54

Finding the Fourth Proportional to 3,240.40, 4,469.38 and 2,119.54

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Solution

The fourth proportional to 3,240.40, 4,469.38 and 2,119.54 is: 2,923.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.40 : 4,469.38 = 2,119.54 : x
  2. Step 2: Convert to fraction form
    3,240.40/4,469.38 = 2,119.54/x
  3. Step 3: Cross multiply
    3,240.40x = 4,469.38 × 2,119.54
  4. Step 4: Simplify right side
    3,240.40x = 9,473,029.69
  5. Step 5: Solve for x
    x = 9,473,029.69/3,240.40
  6. Step 6: Final answer
    x = 2,923.41

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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.