Home / 8,115.75-12,166.34-2,920.41

Finding the Fourth Proportional to 8,115.75, 12,166.34 and 2,920.41

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Solution

The fourth proportional to 8,115.75, 12,166.34 and 2,920.41 is: 4,377.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.75 : 12,166.34 = 2,920.41 : x
  2. Step 2: Convert to fraction form
    8,115.75/12,166.34 = 2,920.41/x
  3. Step 3: Cross multiply
    8,115.75x = 12,166.34 × 2,920.41
  4. Step 4: Simplify right side
    8,115.75x = 35,530,686.40
  5. Step 5: Solve for x
    x = 35,530,686.40/8,115.75
  6. Step 6: Final answer
    x = 4,377.99

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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.