Home / 3,218.62-4,441.77-1,821.37

Finding the Fourth Proportional to 3,218.62, 4,441.77 and 1,821.37

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Solution

The fourth proportional to 3,218.62, 4,441.77 and 1,821.37 is: 2,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.62 : 4,441.77 = 1,821.37 : x
  2. Step 2: Convert to fraction form
    3,218.62/4,441.77 = 1,821.37/x
  3. Step 3: Cross multiply
    3,218.62x = 4,441.77 × 1,821.37
  4. Step 4: Simplify right side
    3,218.62x = 8,090,106.62
  5. Step 5: Solve for x
    x = 8,090,106.62/3,218.62
  6. Step 6: Final answer
    x = 2,513.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.