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Finding the Fourth Proportional to 7,951.10, 11,926.94 and 2,107.69

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Solution

The fourth proportional to 7,951.10, 11,926.94 and 2,107.69 is: 3,161.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,951.10 : 11,926.94 = 2,107.69 : x
  2. Step 2: Convert to fraction form
    7,951.10/11,926.94 = 2,107.69/x
  3. Step 3: Cross multiply
    7,951.10x = 11,926.94 × 2,107.69
  4. Step 4: Simplify right side
    7,951.10x = 25,138,251.81
  5. Step 5: Solve for x
    x = 25,138,251.81/7,951.10
  6. Step 6: Final answer
    x = 3,161.61

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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.