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Finding the Fourth Proportional to 6,419.64, 9,622.82 and 2,724.12

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Solution

The fourth proportional to 6,419.64, 9,622.82 and 2,724.12 is: 4,083.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.64 : 9,622.82 = 2,724.12 : x
  2. Step 2: Convert to fraction form
    6,419.64/9,622.82 = 2,724.12/x
  3. Step 3: Cross multiply
    6,419.64x = 9,622.82 × 2,724.12
  4. Step 4: Simplify right side
    6,419.64x = 26,213,716.42
  5. Step 5: Solve for x
    x = 26,213,716.42/6,419.64
  6. Step 6: Final answer
    x = 4,083.36

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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.