Home / 8,323.28-12,480.09-3,940.70

Finding the Fourth Proportional to 8,323.28, 12,480.09 and 3,940.70

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Solution

The fourth proportional to 8,323.28, 12,480.09 and 3,940.70 is: 5,908.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,323.28 : 12,480.09 = 3,940.70 : x
  2. Step 2: Convert to fraction form
    8,323.28/12,480.09 = 3,940.70/x
  3. Step 3: Cross multiply
    8,323.28x = 12,480.09 × 3,940.70
  4. Step 4: Simplify right side
    8,323.28x = 49,180,290.66
  5. Step 5: Solve for x
    x = 49,180,290.66/8,323.28
  6. Step 6: Final answer
    x = 5,908.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.