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Finding the Fourth Proportional to 8,692.11, 13,038.17 and 3,144.42

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Solution

The fourth proportional to 8,692.11, 13,038.17 and 3,144.42 is: 4,716.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.11 : 13,038.17 = 3,144.42 : x
  2. Step 2: Convert to fraction form
    8,692.11/13,038.17 = 3,144.42/x
  3. Step 3: Cross multiply
    8,692.11x = 13,038.17 × 3,144.42
  4. Step 4: Simplify right side
    8,692.11x = 40,997,466.79
  5. Step 5: Solve for x
    x = 40,997,466.79/8,692.11
  6. Step 6: Final answer
    x = 4,716.63

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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.