Home / 2,418.80-3,626.72-1,321.64

Finding the Fourth Proportional to 2,418.80, 3,626.72 and 1,321.64

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Solution

The fourth proportional to 2,418.80, 3,626.72 and 1,321.64 is: 1,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.80 : 3,626.72 = 1,321.64 : x
  2. Step 2: Convert to fraction form
    2,418.80/3,626.72 = 1,321.64/x
  3. Step 3: Cross multiply
    2,418.80x = 3,626.72 × 1,321.64
  4. Step 4: Simplify right side
    2,418.80x = 4,793,218.22
  5. Step 5: Solve for x
    x = 4,793,218.22/2,418.80
  6. Step 6: Final answer
    x = 1,981.65

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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.