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Finding the Fourth Proportional to 6,611.35, 9,917.43 and 2,169.31

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Solution

The fourth proportional to 6,611.35, 9,917.43 and 2,169.31 is: 3,254.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.35 : 9,917.43 = 2,169.31 : x
  2. Step 2: Convert to fraction form
    6,611.35/9,917.43 = 2,169.31/x
  3. Step 3: Cross multiply
    6,611.35x = 9,917.43 × 2,169.31
  4. Step 4: Simplify right side
    6,611.35x = 21,513,947.14
  5. Step 5: Solve for x
    x = 21,513,947.14/6,611.35
  6. Step 6: Final answer
    x = 3,254.09

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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.