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Finding the Fourth Proportional to 7,859.58, 11,793.42 and 3,480.12

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Solution

The fourth proportional to 7,859.58, 11,793.42 and 3,480.12 is: 5,221.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,859.58 : 11,793.42 = 3,480.12 : x
  2. Step 2: Convert to fraction form
    7,859.58/11,793.42 = 3,480.12/x
  3. Step 3: Cross multiply
    7,859.58x = 11,793.42 × 3,480.12
  4. Step 4: Simplify right side
    7,859.58x = 41,042,516.81
  5. Step 5: Solve for x
    x = 41,042,516.81/7,859.58
  6. Step 6: Final answer
    x = 5,221.97

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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.