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Finding the Fourth Proportional to 8,322.75, 12,484.13 and 2,479.21

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Solution

The fourth proportional to 8,322.75, 12,484.13 and 2,479.21 is: 3,718.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,322.75 : 12,484.13 = 2,479.21 : x
  2. Step 2: Convert to fraction form
    8,322.75/12,484.13 = 2,479.21/x
  3. Step 3: Cross multiply
    8,322.75x = 12,484.13 × 2,479.21
  4. Step 4: Simplify right side
    8,322.75x = 30,950,736.33
  5. Step 5: Solve for x
    x = 30,950,736.33/8,322.75
  6. Step 6: Final answer
    x = 3,718.81

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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.