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Finding the Fourth Proportional to 6,611.55, 9,918.69 and 5,375.91

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Solution

The fourth proportional to 6,611.55, 9,918.69 and 5,375.91 is: 8,064.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.55 : 9,918.69 = 5,375.91 : x
  2. Step 2: Convert to fraction form
    6,611.55/9,918.69 = 5,375.91/x
  3. Step 3: Cross multiply
    6,611.55x = 9,918.69 × 5,375.91
  4. Step 4: Simplify right side
    6,611.55x = 53,321,984.76
  5. Step 5: Solve for x
    x = 53,321,984.76/6,611.55
  6. Step 6: Final answer
    x = 8,064.97

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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.