Home / 2,251.80-3,379.32-1,326.78

Finding the Fourth Proportional to 2,251.80, 3,379.32 and 1,326.78

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Solution

The fourth proportional to 2,251.80, 3,379.32 and 1,326.78 is: 1,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.80 : 3,379.32 = 1,326.78 : x
  2. Step 2: Convert to fraction form
    2,251.80/3,379.32 = 1,326.78/x
  3. Step 3: Cross multiply
    2,251.80x = 3,379.32 × 1,326.78
  4. Step 4: Simplify right side
    2,251.80x = 4,483,614.19
  5. Step 5: Solve for x
    x = 4,483,614.19/2,251.80
  6. Step 6: Final answer
    x = 1,991.12

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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.