Home / 8,100.82-12,148.26-3,939.58

Finding the Fourth Proportional to 8,100.82, 12,148.26 and 3,939.58

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Solution

The fourth proportional to 8,100.82, 12,148.26 and 3,939.58 is: 5,907.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.82 : 12,148.26 = 3,939.58 : x
  2. Step 2: Convert to fraction form
    8,100.82/12,148.26 = 3,939.58/x
  3. Step 3: Cross multiply
    8,100.82x = 12,148.26 × 3,939.58
  4. Step 4: Simplify right side
    8,100.82x = 47,859,042.13
  5. Step 5: Solve for x
    x = 47,859,042.13/8,100.82
  6. Step 6: Final answer
    x = 5,907.93

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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.