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Finding the Fourth Proportional to 6,638.25, 9,957.38 and 2,021.25

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Solution

The fourth proportional to 6,638.25, 9,957.38 and 2,021.25 is: 3,031.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.25 : 9,957.38 = 2,021.25 : x
  2. Step 2: Convert to fraction form
    6,638.25/9,957.38 = 2,021.25/x
  3. Step 3: Cross multiply
    6,638.25x = 9,957.38 × 2,021.25
  4. Step 4: Simplify right side
    6,638.25x = 20,126,344.22
  5. Step 5: Solve for x
    x = 20,126,344.22/6,638.25
  6. Step 6: Final answer
    x = 3,031.88

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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.