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Finding the Fourth Proportional to 8,455.97, 11,659.69 and 6,324.67

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Solution

The fourth proportional to 8,455.97, 11,659.69 and 6,324.67 is: 8,720.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.97 : 11,659.69 = 6,324.67 : x
  2. Step 2: Convert to fraction form
    8,455.97/11,659.69 = 6,324.67/x
  3. Step 3: Cross multiply
    8,455.97x = 11,659.69 × 6,324.67
  4. Step 4: Simplify right side
    8,455.97x = 73,743,755.72
  5. Step 5: Solve for x
    x = 73,743,755.72/8,455.97
  6. Step 6: Final answer
    x = 8,720.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.