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Finding the Fourth Proportional to 6,604.92, 9,912.18 and 5,321.88

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Solution

The fourth proportional to 6,604.92, 9,912.18 and 5,321.88 is: 7,986.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,604.92 : 9,912.18 = 5,321.88 : x
  2. Step 2: Convert to fraction form
    6,604.92/9,912.18 = 5,321.88/x
  3. Step 3: Cross multiply
    6,604.92x = 9,912.18 × 5,321.88
  4. Step 4: Simplify right side
    6,604.92x = 52,751,432.50
  5. Step 5: Solve for x
    x = 52,751,432.50/6,604.92
  6. Step 6: Final answer
    x = 7,986.69

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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.