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Finding the Fourth Proportional to 6,611.06, 9,915.46 and 2,168.64

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Solution

The fourth proportional to 6,611.06, 9,915.46 and 2,168.64 is: 3,252.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.06 : 9,915.46 = 2,168.64 : x
  2. Step 2: Convert to fraction form
    6,611.06/9,915.46 = 2,168.64/x
  3. Step 3: Cross multiply
    6,611.06x = 9,915.46 × 2,168.64
  4. Step 4: Simplify right side
    6,611.06x = 21,503,063.17
  5. Step 5: Solve for x
    x = 21,503,063.17/6,611.06
  6. Step 6: Final answer
    x = 3,252.59

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1.5x scale

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.