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Finding the Fourth Proportional to 3,674, 5,511 and 3,489.44

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Solution

The fourth proportional to 3,674, 5,511 and 3,489.44 is: 5,234.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,674 : 5,511 = 3,489.44 : x
  2. Step 2: Convert to fraction form
    3,674/5,511 = 3,489.44/x
  3. Step 3: Cross multiply
    3,674x = 5,511 × 3,489.44
  4. Step 4: Simplify right side
    3,674x = 19,230,303.84
  5. Step 5: Solve for x
    x = 19,230,303.84/3,674
  6. Step 6: Final answer
    x = 5,234.16

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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.