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Finding the Fourth Proportional to 6,611.62, 9,917.42 and 2,228.72

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Solution

The fourth proportional to 6,611.62, 9,917.42 and 2,228.72 is: 3,343.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.62 : 9,917.42 = 2,228.72 : x
  2. Step 2: Convert to fraction form
    6,611.62/9,917.42 = 2,228.72/x
  3. Step 3: Cross multiply
    6,611.62x = 9,917.42 × 2,228.72
  4. Step 4: Simplify right side
    6,611.62x = 22,103,152.30
  5. Step 5: Solve for x
    x = 22,103,152.30/6,611.62
  6. Step 6: Final answer
    x = 3,343.08

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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.