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Finding the Fourth Proportional to 7,939.55, 11,909.13 and 2,096.21

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Solution

The fourth proportional to 7,939.55, 11,909.13 and 2,096.21 is: 3,144.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.55 : 11,909.13 = 2,096.21 : x
  2. Step 2: Convert to fraction form
    7,939.55/11,909.13 = 2,096.21/x
  3. Step 3: Cross multiply
    7,939.55x = 11,909.13 × 2,096.21
  4. Step 4: Simplify right side
    7,939.55x = 24,964,059.31
  5. Step 5: Solve for x
    x = 24,964,059.31/7,939.55
  6. Step 6: Final answer
    x = 3,144.27

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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.