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Finding the Fourth Proportional to 7,993.55, 11,990.84 and 3,822.05

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Solution

The fourth proportional to 7,993.55, 11,990.84 and 3,822.05 is: 5,733.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993.55 : 11,990.84 = 3,822.05 : x
  2. Step 2: Convert to fraction form
    7,993.55/11,990.84 = 3,822.05/x
  3. Step 3: Cross multiply
    7,993.55x = 11,990.84 × 3,822.05
  4. Step 4: Simplify right side
    7,993.55x = 45,829,600.89
  5. Step 5: Solve for x
    x = 45,829,600.89/7,993.55
  6. Step 6: Final answer
    x = 5,733.32

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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.