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Finding the Fourth Proportional to 7,906.62, 11,856.06 and 4,620.54

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Solution

The fourth proportional to 7,906.62, 11,856.06 and 4,620.54 is: 6,928.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,906.62 : 11,856.06 = 4,620.54 : x
  2. Step 2: Convert to fraction form
    7,906.62/11,856.06 = 4,620.54/x
  3. Step 3: Cross multiply
    7,906.62x = 11,856.06 × 4,620.54
  4. Step 4: Simplify right side
    7,906.62x = 54,781,399.47
  5. Step 5: Solve for x
    x = 54,781,399.47/7,906.62
  6. Step 6: Final answer
    x = 6,928.55

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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.