Home / 8,212.48-12,319.37-3,279.41

Finding the Fourth Proportional to 8,212.48, 12,319.37 and 3,279.41

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Solution

The fourth proportional to 8,212.48, 12,319.37 and 3,279.41 is: 4,919.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.48 : 12,319.37 = 3,279.41 : x
  2. Step 2: Convert to fraction form
    8,212.48/12,319.37 = 3,279.41/x
  3. Step 3: Cross multiply
    8,212.48x = 12,319.37 × 3,279.41
  4. Step 4: Simplify right side
    8,212.48x = 40,400,265.17
  5. Step 5: Solve for x
    x = 40,400,265.17/8,212.48
  6. Step 6: Final answer
    x = 4,919.37

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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.