Home / 7,486.25-11,229.41-1,939.20

Finding the Fourth Proportional to 7,486.25, 11,229.41 and 1,939.20

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Solution

The fourth proportional to 7,486.25, 11,229.41 and 1,939.20 is: 2,908.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.25 : 11,229.41 = 1,939.20 : x
  2. Step 2: Convert to fraction form
    7,486.25/11,229.41 = 1,939.20/x
  3. Step 3: Cross multiply
    7,486.25x = 11,229.41 × 1,939.20
  4. Step 4: Simplify right side
    7,486.25x = 21,776,062.18
  5. Step 5: Solve for x
    x = 21,776,062.18/7,486.25
  6. Step 6: Final answer
    x = 2,908.81

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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.