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Finding the Fourth Proportional to 7,996.60, 11,989.43 and 3,611.67

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Solution

The fourth proportional to 7,996.60, 11,989.43 and 3,611.67 is: 5,415.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,996.60 : 11,989.43 = 3,611.67 : x
  2. Step 2: Convert to fraction form
    7,996.60/11,989.43 = 3,611.67/x
  3. Step 3: Cross multiply
    7,996.60x = 11,989.43 × 3,611.67
  4. Step 4: Simplify right side
    7,996.60x = 43,301,864.65
  5. Step 5: Solve for x
    x = 43,301,864.65/7,996.60
  6. Step 6: Final answer
    x = 5,415.03

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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.