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Finding the Fourth Proportional to 6,693.11, 9,238.62 and 3,899.15

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Solution

The fourth proportional to 6,693.11, 9,238.62 and 3,899.15 is: 5,382.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,693.11 : 9,238.62 = 3,899.15 : x
  2. Step 2: Convert to fraction form
    6,693.11/9,238.62 = 3,899.15/x
  3. Step 3: Cross multiply
    6,693.11x = 9,238.62 × 3,899.15
  4. Step 4: Simplify right side
    6,693.11x = 36,022,699.48
  5. Step 5: Solve for x
    x = 36,022,699.48/6,693.11
  6. Step 6: Final answer
    x = 5,382.06

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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.