Home / 3,912.80-5,880.15-3,212.96

Finding the Fourth Proportional to 3,912.80, 5,880.15 and 3,212.96

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Solution

The fourth proportional to 3,912.80, 5,880.15 and 3,212.96 is: 4,828.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.80 : 5,880.15 = 3,212.96 : x
  2. Step 2: Convert to fraction form
    3,912.80/5,880.15 = 3,212.96/x
  3. Step 3: Cross multiply
    3,912.80x = 5,880.15 × 3,212.96
  4. Step 4: Simplify right side
    3,912.80x = 18,892,657.34
  5. Step 5: Solve for x
    x = 18,892,657.34/3,912.80
  6. Step 6: Final answer
    x = 4,828.43

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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.