Home / 7,942.80-11,912.76-2,677.32

Finding the Fourth Proportional to 7,942.80, 11,912.76 and 2,677.32

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Solution

The fourth proportional to 7,942.80, 11,912.76 and 2,677.32 is: 4,015.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,942.80 : 11,912.76 = 2,677.32 : x
  2. Step 2: Convert to fraction form
    7,942.80/11,912.76 = 2,677.32/x
  3. Step 3: Cross multiply
    7,942.80x = 11,912.76 × 2,677.32
  4. Step 4: Simplify right side
    7,942.80x = 31,894,270.60
  5. Step 5: Solve for x
    x = 31,894,270.60/7,942.80
  6. Step 6: Final answer
    x = 4,015.49

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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.