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Finding the Fourth Proportional to 7,894.47, 11,836.22 and 3,996.21

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Solution

The fourth proportional to 7,894.47, 11,836.22 and 3,996.21 is: 5,991.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,894.47 : 11,836.22 = 3,996.21 : x
  2. Step 2: Convert to fraction form
    7,894.47/11,836.22 = 3,996.21/x
  3. Step 3: Cross multiply
    7,894.47x = 11,836.22 × 3,996.21
  4. Step 4: Simplify right side
    7,894.47x = 47,300,000.75
  5. Step 5: Solve for x
    x = 47,300,000.75/7,894.47
  6. Step 6: Final answer
    x = 5,991.54

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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.