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Finding the Fourth Proportional to 7,993.39, 11,990.25 and 2,729.61

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Solution

The fourth proportional to 7,993.39, 11,990.25 and 2,729.61 is: 4,094.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993.39 : 11,990.25 = 2,729.61 : x
  2. Step 2: Convert to fraction form
    7,993.39/11,990.25 = 2,729.61/x
  3. Step 3: Cross multiply
    7,993.39x = 11,990.25 × 2,729.61
  4. Step 4: Simplify right side
    7,993.39x = 32,728,632.70
  5. Step 5: Solve for x
    x = 32,728,632.70/7,993.39
  6. Step 6: Final answer
    x = 4,094.46

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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.