Home / 8,135.60-12,204.21-2,212.57

Finding the Fourth Proportional to 8,135.60, 12,204.21 and 2,212.57

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Solution

The fourth proportional to 8,135.60, 12,204.21 and 2,212.57 is: 3,319.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.60 : 12,204.21 = 2,212.57 : x
  2. Step 2: Convert to fraction form
    8,135.60/12,204.21 = 2,212.57/x
  3. Step 3: Cross multiply
    8,135.60x = 12,204.21 × 2,212.57
  4. Step 4: Simplify right side
    8,135.60x = 27,002,607.90
  5. Step 5: Solve for x
    x = 27,002,607.90/8,135.60
  6. Step 6: Final answer
    x = 3,319.07

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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.