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Finding the Fourth Proportional to 6,638.18, 9,934.18 and 5,453.96

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Solution

The fourth proportional to 6,638.18, 9,934.18 and 5,453.96 is: 8,161.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.18 : 9,934.18 = 5,453.96 : x
  2. Step 2: Convert to fraction form
    6,638.18/9,934.18 = 5,453.96/x
  3. Step 3: Cross multiply
    6,638.18x = 9,934.18 × 5,453.96
  4. Step 4: Simplify right side
    6,638.18x = 54,180,557.05
  5. Step 5: Solve for x
    x = 54,180,557.05/6,638.18
  6. Step 6: Final answer
    x = 8,161.97

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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.