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Finding the Fourth Proportional to 8,285.67, 12,428.51 and 3,351.92

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Solution

The fourth proportional to 8,285.67, 12,428.51 and 3,351.92 is: 5,027.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,285.67 : 12,428.51 = 3,351.92 : x
  2. Step 2: Convert to fraction form
    8,285.67/12,428.51 = 3,351.92/x
  3. Step 3: Cross multiply
    8,285.67x = 12,428.51 × 3,351.92
  4. Step 4: Simplify right side
    8,285.67x = 41,659,292.34
  5. Step 5: Solve for x
    x = 41,659,292.34/8,285.67
  6. Step 6: Final answer
    x = 5,027.87

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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.