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Finding the Fourth Proportional to 8,458.82, 12,692.20 and 3,778.39

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Solution

The fourth proportional to 8,458.82, 12,692.20 and 3,778.39 is: 5,669.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.82 : 12,692.20 = 3,778.39 : x
  2. Step 2: Convert to fraction form
    8,458.82/12,692.20 = 3,778.39/x
  3. Step 3: Cross multiply
    8,458.82x = 12,692.20 × 3,778.39
  4. Step 4: Simplify right side
    8,458.82x = 47,956,081.56
  5. Step 5: Solve for x
    x = 47,956,081.56/8,458.82
  6. Step 6: Final answer
    x = 5,669.36

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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.