Home / 8,138.18-12,212.27-3,755.96

Finding the Fourth Proportional to 8,138.18, 12,212.27 and 3,755.96

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Solution

The fourth proportional to 8,138.18, 12,212.27 and 3,755.96 is: 5,636.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.18 : 12,212.27 = 3,755.96 : x
  2. Step 2: Convert to fraction form
    8,138.18/12,212.27 = 3,755.96/x
  3. Step 3: Cross multiply
    8,138.18x = 12,212.27 × 3,755.96
  4. Step 4: Simplify right side
    8,138.18x = 45,868,797.63
  5. Step 5: Solve for x
    x = 45,868,797.63/8,138.18
  6. Step 6: Final answer
    x = 5,636.25

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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.