Home / 7,486.18-11,229.31-1,939.14

Finding the Fourth Proportional to 7,486.18, 11,229.31 and 1,939.14

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Solution

The fourth proportional to 7,486.18, 11,229.31 and 1,939.14 is: 2,908.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.18 : 11,229.31 = 1,939.14 : x
  2. Step 2: Convert to fraction form
    7,486.18/11,229.31 = 1,939.14/x
  3. Step 3: Cross multiply
    7,486.18x = 11,229.31 × 1,939.14
  4. Step 4: Simplify right side
    7,486.18x = 21,775,143.20
  5. Step 5: Solve for x
    x = 21,775,143.20/7,486.18
  6. Step 6: Final answer
    x = 2,908.71

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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.