Home / 7,939.86-11,912.16-2,393.38

Finding the Fourth Proportional to 7,939.86, 11,912.16 and 2,393.38

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Solution

The fourth proportional to 7,939.86, 11,912.16 and 2,393.38 is: 3,590.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.86 : 11,912.16 = 2,393.38 : x
  2. Step 2: Convert to fraction form
    7,939.86/11,912.16 = 2,393.38/x
  3. Step 3: Cross multiply
    7,939.86x = 11,912.16 × 2,393.38
  4. Step 4: Simplify right side
    7,939.86x = 28,510,349.37
  5. Step 5: Solve for x
    x = 28,510,349.37/7,939.86
  6. Step 6: Final answer
    x = 3,590.79

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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.