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Finding the Fourth Proportional to 6,638.55, 9,959.24 and 2,195.97

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Solution

The fourth proportional to 6,638.55, 9,959.24 and 2,195.97 is: 3,294.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.55 : 9,959.24 = 2,195.97 : x
  2. Step 2: Convert to fraction form
    6,638.55/9,959.24 = 2,195.97/x
  3. Step 3: Cross multiply
    6,638.55x = 9,959.24 × 2,195.97
  4. Step 4: Simplify right side
    6,638.55x = 21,870,181.28
  5. Step 5: Solve for x
    x = 21,870,181.28/6,638.55
  6. Step 6: Final answer
    x = 3,294.42

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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.