Home / 7,939.12-11,904.42-2,672.38

Finding the Fourth Proportional to 7,939.12, 11,904.42 and 2,672.38

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Solution

The fourth proportional to 7,939.12, 11,904.42 and 2,672.38 is: 4,007.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.12 : 11,904.42 = 2,672.38 : x
  2. Step 2: Convert to fraction form
    7,939.12/11,904.42 = 2,672.38/x
  3. Step 3: Cross multiply
    7,939.12x = 11,904.42 × 2,672.38
  4. Step 4: Simplify right side
    7,939.12x = 31,813,076.83
  5. Step 5: Solve for x
    x = 31,813,076.83/7,939.12
  6. Step 6: Final answer
    x = 4,007.13

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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.