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Finding the Fourth Proportional to 6,611.18, 9,916.09 and 2,228.67

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Solution

The fourth proportional to 6,611.18, 9,916.09 and 2,228.67 is: 3,342.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.18 : 9,916.09 = 2,228.67 : x
  2. Step 2: Convert to fraction form
    6,611.18/9,916.09 = 2,228.67/x
  3. Step 3: Cross multiply
    6,611.18x = 9,916.09 × 2,228.67
  4. Step 4: Simplify right side
    6,611.18x = 22,099,681.16
  5. Step 5: Solve for x
    x = 22,099,681.16/6,611.18
  6. Step 6: Final answer
    x = 3,342.78

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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.