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Finding the Fourth Proportional to 6,906.72, 9,529.20 and 6,241.44

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Solution

The fourth proportional to 6,906.72, 9,529.20 and 6,241.44 is: 8,611.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,906.72 : 9,529.20 = 6,241.44 : x
  2. Step 2: Convert to fraction form
    6,906.72/9,529.20 = 6,241.44/x
  3. Step 3: Cross multiply
    6,906.72x = 9,529.20 × 6,241.44
  4. Step 4: Simplify right side
    6,906.72x = 59,475,930.05
  5. Step 5: Solve for x
    x = 59,475,930.05/6,906.72
  6. Step 6: Final answer
    x = 8,611.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.