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Finding the Fourth Proportional to 6,659.96, 9,991.18 and 2,764.68

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Solution

The fourth proportional to 6,659.96, 9,991.18 and 2,764.68 is: 4,147.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659.96 : 9,991.18 = 2,764.68 : x
  2. Step 2: Convert to fraction form
    6,659.96/9,991.18 = 2,764.68/x
  3. Step 3: Cross multiply
    6,659.96x = 9,991.18 × 2,764.68
  4. Step 4: Simplify right side
    6,659.96x = 27,622,415.52
  5. Step 5: Solve for x
    x = 27,622,415.52/6,659.96
  6. Step 6: Final answer
    x = 4,147.53

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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.