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Finding the Fourth Proportional to 6,608.34, 9,912.42 and 1,991.34

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Solution

The fourth proportional to 6,608.34, 9,912.42 and 1,991.34 is: 2,986.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,608.34 : 9,912.42 = 1,991.34 : x
  2. Step 2: Convert to fraction form
    6,608.34/9,912.42 = 1,991.34/x
  3. Step 3: Cross multiply
    6,608.34x = 9,912.42 × 1,991.34
  4. Step 4: Simplify right side
    6,608.34x = 19,738,998.44
  5. Step 5: Solve for x
    x = 19,738,998.44/6,608.34
  6. Step 6: Final answer
    x = 2,986.98

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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.