Home / 8,153.22-12,222.54-3,990.64

Finding the Fourth Proportional to 8,153.22, 12,222.54 and 3,990.64

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Solution

The fourth proportional to 8,153.22, 12,222.54 and 3,990.64 is: 5,982.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,153.22 : 12,222.54 = 3,990.64 : x
  2. Step 2: Convert to fraction form
    8,153.22/12,222.54 = 3,990.64/x
  3. Step 3: Cross multiply
    8,153.22x = 12,222.54 × 3,990.64
  4. Step 4: Simplify right side
    8,153.22x = 48,775,757.03
  5. Step 5: Solve for x
    x = 48,775,757.03/8,153.22
  6. Step 6: Final answer
    x = 5,982.39

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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.