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Finding the Fourth Proportional to 7,939.26, 11,910.11 and 2,391.89

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Solution

The fourth proportional to 7,939.26, 11,910.11 and 2,391.89 is: 3,588.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.26 : 11,910.11 = 2,391.89 : x
  2. Step 2: Convert to fraction form
    7,939.26/11,910.11 = 2,391.89/x
  3. Step 3: Cross multiply
    7,939.26x = 11,910.11 × 2,391.89
  4. Step 4: Simplify right side
    7,939.26x = 28,487,601.50
  5. Step 5: Solve for x
    x = 28,487,601.50/7,939.26
  6. Step 6: Final answer
    x = 3,588.19

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1.5x scale

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.