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Finding the Fourth Proportional to 6,625.92, 9,940.08 and 2,728.20

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Solution

The fourth proportional to 6,625.92, 9,940.08 and 2,728.20 is: 4,092.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,625.92 : 9,940.08 = 2,728.20 : x
  2. Step 2: Convert to fraction form
    6,625.92/9,940.08 = 2,728.20/x
  3. Step 3: Cross multiply
    6,625.92x = 9,940.08 × 2,728.20
  4. Step 4: Simplify right side
    6,625.92x = 27,118,526.26
  5. Step 5: Solve for x
    x = 27,118,526.26/6,625.92
  6. Step 6: Final answer
    x = 4,092.79

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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.