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Finding the Fourth Proportional to 8,478.44, 12,706.14 and 3,850.60

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Solution

The fourth proportional to 8,478.44, 12,706.14 and 3,850.60 is: 5,770.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.44 : 12,706.14 = 3,850.60 : x
  2. Step 2: Convert to fraction form
    8,478.44/12,706.14 = 3,850.60/x
  3. Step 3: Cross multiply
    8,478.44x = 12,706.14 × 3,850.60
  4. Step 4: Simplify right side
    8,478.44x = 48,926,262.68
  5. Step 5: Solve for x
    x = 48,926,262.68/8,478.44
  6. Step 6: Final answer
    x = 5,770.67

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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.