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Finding the Fourth Proportional to 6,342, 9,513.60 and 2,181.84

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Solution

The fourth proportional to 6,342, 9,513.60 and 2,181.84 is: 3,272.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,342 : 9,513.60 = 2,181.84 : x
  2. Step 2: Convert to fraction form
    6,342/9,513.60 = 2,181.84/x
  3. Step 3: Cross multiply
    6,342x = 9,513.60 × 2,181.84
  4. Step 4: Simplify right side
    6,342x = 20,757,153.02
  5. Step 5: Solve for x
    x = 20,757,153.02/6,342
  6. Step 6: Final answer
    x = 3,272.97

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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.