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Finding the Fourth Proportional to 6,638.14, 9,957.21 and 2,738.26

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Solution

The fourth proportional to 6,638.14, 9,957.21 and 2,738.26 is: 4,107.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.14 : 9,957.21 = 2,738.26 : x
  2. Step 2: Convert to fraction form
    6,638.14/9,957.21 = 2,738.26/x
  3. Step 3: Cross multiply
    6,638.14x = 9,957.21 × 2,738.26
  4. Step 4: Simplify right side
    6,638.14x = 27,265,429.85
  5. Step 5: Solve for x
    x = 27,265,429.85/6,638.14
  6. Step 6: Final answer
    x = 4,107.39

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Similar ratio
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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.