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Finding the Fourth Proportional to 7,993, 11,991.12 and 3,376

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Solution

The fourth proportional to 7,993, 11,991.12 and 3,376 is: 5,064.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993 : 11,991.12 = 3,376 : x
  2. Step 2: Convert to fraction form
    7,993/11,991.12 = 3,376/x
  3. Step 3: Cross multiply
    7,993x = 11,991.12 × 3,376
  4. Step 4: Simplify right side
    7,993x = 40,482,021.12
  5. Step 5: Solve for x
    x = 40,482,021.12/7,993
  6. Step 6: Final answer
    x = 5,064.68

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Double scale
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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.