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Finding the Fourth Proportional to 6,638.98, 9,958.47 and 3,354.85

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Solution

The fourth proportional to 6,638.98, 9,958.47 and 3,354.85 is: 5,032.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.98 : 9,958.47 = 3,354.85 : x
  2. Step 2: Convert to fraction form
    6,638.98/9,958.47 = 3,354.85/x
  3. Step 3: Cross multiply
    6,638.98x = 9,958.47 × 3,354.85
  4. Step 4: Simplify right side
    6,638.98x = 33,409,173.08
  5. Step 5: Solve for x
    x = 33,409,173.08/6,638.98
  6. Step 6: Final answer
    x = 5,032.28

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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.