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Finding the Fourth Proportional to 8,212.83, 12,322.31 and 4,928.28

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Solution

The fourth proportional to 8,212.83, 12,322.31 and 4,928.28 is: 7,394.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.83 : 12,322.31 = 4,928.28 : x
  2. Step 2: Convert to fraction form
    8,212.83/12,322.31 = 4,928.28/x
  3. Step 3: Cross multiply
    8,212.83x = 12,322.31 × 4,928.28
  4. Step 4: Simplify right side
    8,212.83x = 60,727,793.93
  5. Step 5: Solve for x
    x = 60,727,793.93/8,212.83
  6. Step 6: Final answer
    x = 7,394.26

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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.