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Finding the Fourth Proportional to 2,163.83, 3,243.54 and 993.03

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Solution

The fourth proportional to 2,163.83, 3,243.54 and 993.03 is: 1,488.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.83 : 3,243.54 = 993.03 : x
  2. Step 2: Convert to fraction form
    2,163.83/3,243.54 = 993.03/x
  3. Step 3: Cross multiply
    2,163.83x = 3,243.54 × 993.03
  4. Step 4: Simplify right side
    2,163.83x = 3,220,935.01
  5. Step 5: Solve for x
    x = 3,220,935.01/2,163.83
  6. Step 6: Final answer
    x = 1,488.53

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1.5x scale

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.