Home / 8,211.75-12,316.18-2,664.28

Finding the Fourth Proportional to 8,211.75, 12,316.18 and 2,664.28

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Solution

The fourth proportional to 8,211.75, 12,316.18 and 2,664.28 is: 3,995.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.75 : 12,316.18 = 2,664.28 : x
  2. Step 2: Convert to fraction form
    8,211.75/12,316.18 = 2,664.28/x
  3. Step 3: Cross multiply
    8,211.75x = 12,316.18 × 2,664.28
  4. Step 4: Simplify right side
    8,211.75x = 32,813,738.73
  5. Step 5: Solve for x
    x = 32,813,738.73/8,211.75
  6. Step 6: Final answer
    x = 3,995.95

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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.