Home / 8,212.35-12,321.15-2,943.81

Finding the Fourth Proportional to 8,212.35, 12,321.15 and 2,943.81

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Solution

The fourth proportional to 8,212.35, 12,321.15 and 2,943.81 is: 4,416.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.35 : 12,321.15 = 2,943.81 : x
  2. Step 2: Convert to fraction form
    8,212.35/12,321.15 = 2,943.81/x
  3. Step 3: Cross multiply
    8,212.35x = 12,321.15 × 2,943.81
  4. Step 4: Simplify right side
    8,212.35x = 36,271,124.58
  5. Step 5: Solve for x
    x = 36,271,124.58/8,212.35
  6. Step 6: Final answer
    x = 4,416.66

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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.