Home / 8,137.20-12,200.32-2,942.40

Finding the Fourth Proportional to 8,137.20, 12,200.32 and 2,942.40

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Solution

The fourth proportional to 8,137.20, 12,200.32 and 2,942.40 is: 4,411.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,137.20 : 12,200.32 = 2,942.40 : x
  2. Step 2: Convert to fraction form
    8,137.20/12,200.32 = 2,942.40/x
  3. Step 3: Cross multiply
    8,137.20x = 12,200.32 × 2,942.40
  4. Step 4: Simplify right side
    8,137.20x = 35,898,221.57
  5. Step 5: Solve for x
    x = 35,898,221.57/8,137.20
  6. Step 6: Final answer
    x = 4,411.62

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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.