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Finding the Fourth Proportional to 2,164.11, 3,243.35 and 993.69

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Solution

The fourth proportional to 2,164.11, 3,243.35 and 993.69 is: 1,489.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,164.11 : 3,243.35 = 993.69 : x
  2. Step 2: Convert to fraction form
    2,164.11/3,243.35 = 993.69/x
  3. Step 3: Cross multiply
    2,164.11x = 3,243.35 × 993.69
  4. Step 4: Simplify right side
    2,164.11x = 3,222,879.49
  5. Step 5: Solve for x
    x = 3,222,879.49/2,164.11
  6. Step 6: Final answer
    x = 1,489.24

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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.