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Finding the Fourth Proportional to 6,636.96, 9,961.92 and 5,419.26

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Solution

The fourth proportional to 6,636.96, 9,961.92 and 5,419.26 is: 8,134.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,636.96 : 9,961.92 = 5,419.26 : x
  2. Step 2: Convert to fraction form
    6,636.96/9,961.92 = 5,419.26/x
  3. Step 3: Cross multiply
    6,636.96x = 9,961.92 × 5,419.26
  4. Step 4: Simplify right side
    6,636.96x = 53,986,234.58
  5. Step 5: Solve for x
    x = 53,986,234.58/6,636.96
  6. Step 6: Final answer
    x = 8,134.18

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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.