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Finding the Fourth Proportional to 6,899.75, 9,521.66 and 3,755.96

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Solution

The fourth proportional to 6,899.75, 9,521.66 and 3,755.96 is: 5,183.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899.75 : 9,521.66 = 3,755.96 : x
  2. Step 2: Convert to fraction form
    6,899.75/9,521.66 = 3,755.96/x
  3. Step 3: Cross multiply
    6,899.75x = 9,521.66 × 3,755.96
  4. Step 4: Simplify right side
    6,899.75x = 35,762,974.09
  5. Step 5: Solve for x
    x = 35,762,974.09/6,899.75
  6. Step 6: Final answer
    x = 5,183.23

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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.