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Finding the Fourth Proportional to 8,072.70, 12,109.05 and 4,136.10

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Solution

The fourth proportional to 8,072.70, 12,109.05 and 4,136.10 is: 6,204.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072.70 : 12,109.05 = 4,136.10 : x
  2. Step 2: Convert to fraction form
    8,072.70/12,109.05 = 4,136.10/x
  3. Step 3: Cross multiply
    8,072.70x = 12,109.05 × 4,136.10
  4. Step 4: Simplify right side
    8,072.70x = 50,084,241.71
  5. Step 5: Solve for x
    x = 50,084,241.71/8,072.70
  6. Step 6: Final answer
    x = 6,204.15

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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.