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Finding the Fourth Proportional to 8,453.62, 12,677.82 and 3,189.39

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Solution

The fourth proportional to 8,453.62, 12,677.82 and 3,189.39 is: 4,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,453.62 : 12,677.82 = 3,189.39 : x
  2. Step 2: Convert to fraction form
    8,453.62/12,677.82 = 3,189.39/x
  3. Step 3: Cross multiply
    8,453.62x = 12,677.82 × 3,189.39
  4. Step 4: Simplify right side
    8,453.62x = 40,434,512.33
  5. Step 5: Solve for x
    x = 40,434,512.33/8,453.62
  6. Step 6: Final answer
    x = 4,783.10

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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.