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Finding the Fourth Proportional to 6,606.50, 9,896.79 and 3,309.86

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Solution

The fourth proportional to 6,606.50, 9,896.79 and 3,309.86 is: 4,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,606.50 : 9,896.79 = 3,309.86 : x
  2. Step 2: Convert to fraction form
    6,606.50/9,896.79 = 3,309.86/x
  3. Step 3: Cross multiply
    6,606.50x = 9,896.79 × 3,309.86
  4. Step 4: Simplify right side
    6,606.50x = 32,756,989.35
  5. Step 5: Solve for x
    x = 32,756,989.35/6,606.50
  6. Step 6: Final answer
    x = 4,958.30

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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.