Home / 3,613.86-5,418.18-1,855.44

Finding the Fourth Proportional to 3,613.86, 5,418.18 and 1,855.44

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Solution

The fourth proportional to 3,613.86, 5,418.18 and 1,855.44 is: 2,781.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.86 : 5,418.18 = 1,855.44 : x
  2. Step 2: Convert to fraction form
    3,613.86/5,418.18 = 1,855.44/x
  3. Step 3: Cross multiply
    3,613.86x = 5,418.18 × 1,855.44
  4. Step 4: Simplify right side
    3,613.86x = 10,053,107.90
  5. Step 5: Solve for x
    x = 10,053,107.90/3,613.86
  6. Step 6: Final answer
    x = 2,781.82

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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.