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Finding the Fourth Proportional to 6,605.64, 9,910.67 and 2,163.51

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Solution

The fourth proportional to 6,605.64, 9,910.67 and 2,163.51 is: 3,245.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,605.64 : 9,910.67 = 2,163.51 : x
  2. Step 2: Convert to fraction form
    6,605.64/9,910.67 = 2,163.51/x
  3. Step 3: Cross multiply
    6,605.64x = 9,910.67 × 2,163.51
  4. Step 4: Simplify right side
    6,605.64x = 21,441,833.65
  5. Step 5: Solve for x
    x = 21,441,833.65/6,605.64
  6. Step 6: Final answer
    x = 3,245.99

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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.