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Finding the Fourth Proportional to 6,612, 9,917.94 and 1,995

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Solution

The fourth proportional to 6,612, 9,917.94 and 1,995 is: 2,992.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612 : 9,917.94 = 1,995 : x
  2. Step 2: Convert to fraction form
    6,612/9,917.94 = 1,995/x
  3. Step 3: Cross multiply
    6,612x = 9,917.94 × 1,995
  4. Step 4: Simplify right side
    6,612x = 19,786,290.30
  5. Step 5: Solve for x
    x = 19,786,290.30/6,612
  6. Step 6: Final answer
    x = 2,992.48

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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.