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Finding the Fourth Proportional to 3,163.07, 4,745.00 and 1,215.02

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Solution

The fourth proportional to 3,163.07, 4,745.00 and 1,215.02 is: 1,822.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.07 : 4,745.00 = 1,215.02 : x
  2. Step 2: Convert to fraction form
    3,163.07/4,745.00 = 1,215.02/x
  3. Step 3: Cross multiply
    3,163.07x = 4,745.00 × 1,215.02
  4. Step 4: Simplify right side
    3,163.07x = 5,765,249.21
  5. Step 5: Solve for x
    x = 5,765,249.21/3,163.07
  6. Step 6: Final answer
    x = 1,822.68

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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.