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Finding the Fourth Proportional to 3,745.46, 5,618.12 and 1,664.90

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Solution

The fourth proportional to 3,745.46, 5,618.12 and 1,664.90 is: 2,497.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745.46 : 5,618.12 = 1,664.90 : x
  2. Step 2: Convert to fraction form
    3,745.46/5,618.12 = 1,664.90/x
  3. Step 3: Cross multiply
    3,745.46x = 5,618.12 × 1,664.90
  4. Step 4: Simplify right side
    3,745.46x = 9,353,599.66
  5. Step 5: Solve for x
    x = 9,353,599.66/3,745.46
  6. Step 6: Final answer
    x = 2,497.32

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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.