Home / 8,161.20-12,235.80-2,611.34

Finding the Fourth Proportional to 8,161.20, 12,235.80 and 2,611.34

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Solution

The fourth proportional to 8,161.20, 12,235.80 and 2,611.34 is: 3,915.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,161.20 : 12,235.80 = 2,611.34 : x
  2. Step 2: Convert to fraction form
    8,161.20/12,235.80 = 2,611.34/x
  3. Step 3: Cross multiply
    8,161.20x = 12,235.80 × 2,611.34
  4. Step 4: Simplify right side
    8,161.20x = 31,951,833.97
  5. Step 5: Solve for x
    x = 31,951,833.97/8,161.20
  6. Step 6: Final answer
    x = 3,915.09

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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.