Home / 7,937.86-11,912.28-2,743.78

Finding the Fourth Proportional to 7,937.86, 11,912.28 and 2,743.78

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Solution

The fourth proportional to 7,937.86, 11,912.28 and 2,743.78 is: 4,117.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,937.86 : 11,912.28 = 2,743.78 : x
  2. Step 2: Convert to fraction form
    7,937.86/11,912.28 = 2,743.78/x
  3. Step 3: Cross multiply
    7,937.86x = 11,912.28 × 2,743.78
  4. Step 4: Simplify right side
    7,937.86x = 32,684,675.62
  5. Step 5: Solve for x
    x = 32,684,675.62/7,937.86
  6. Step 6: Final answer
    x = 4,117.57

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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.