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Finding the Fourth Proportional to 8,268.57, 12,388.41 and 6,890.76

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Solution

The fourth proportional to 8,268.57, 12,388.41 and 6,890.76 is: 10,324.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,268.57 : 12,388.41 = 6,890.76 : x
  2. Step 2: Convert to fraction form
    8,268.57/12,388.41 = 6,890.76/x
  3. Step 3: Cross multiply
    8,268.57x = 12,388.41 × 6,890.76
  4. Step 4: Simplify right side
    8,268.57x = 85,365,560.09
  5. Step 5: Solve for x
    x = 85,365,560.09/8,268.57
  6. Step 6: Final answer
    x = 10,324.10

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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.