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Finding the Fourth Proportional to 8,392.75, 12,588.41 and 3,949.38

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Solution

The fourth proportional to 8,392.75, 12,588.41 and 3,949.38 is: 5,923.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,392.75 : 12,588.41 = 3,949.38 : x
  2. Step 2: Convert to fraction form
    8,392.75/12,588.41 = 3,949.38/x
  3. Step 3: Cross multiply
    8,392.75x = 12,588.41 × 3,949.38
  4. Step 4: Simplify right side
    8,392.75x = 49,716,424.56
  5. Step 5: Solve for x
    x = 49,716,424.56/8,392.75
  6. Step 6: Final answer
    x = 5,923.74

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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.