Home / 7,939.66-11,912.73-2,749.18

Finding the Fourth Proportional to 7,939.66, 11,912.73 and 2,749.18

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Solution

The fourth proportional to 7,939.66, 11,912.73 and 2,749.18 is: 4,124.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.66 : 11,912.73 = 2,749.18 : x
  2. Step 2: Convert to fraction form
    7,939.66/11,912.73 = 2,749.18/x
  3. Step 3: Cross multiply
    7,939.66x = 11,912.73 × 2,749.18
  4. Step 4: Simplify right side
    7,939.66x = 32,750,239.06
  5. Step 5: Solve for x
    x = 32,750,239.06/7,939.66
  6. Step 6: Final answer
    x = 4,124.89

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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.