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Finding the Fourth Proportional to 6,642, 9,165.96 and 3,698

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Solution

The fourth proportional to 6,642, 9,165.96 and 3,698 is: 5,103.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642 : 9,165.96 = 3,698 : x
  2. Step 2: Convert to fraction form
    6,642/9,165.96 = 3,698/x
  3. Step 3: Cross multiply
    6,642x = 9,165.96 × 3,698
  4. Step 4: Simplify right side
    6,642x = 33,895,720.08
  5. Step 5: Solve for x
    x = 33,895,720.08/6,642
  6. Step 6: Final answer
    x = 5,103.24

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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.