Home / 3,079.45-4,249.61-1,682.20

Finding the Fourth Proportional to 3,079.45, 4,249.61 and 1,682.20

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Solution

The fourth proportional to 3,079.45, 4,249.61 and 1,682.20 is: 2,321.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.45 : 4,249.61 = 1,682.20 : x
  2. Step 2: Convert to fraction form
    3,079.45/4,249.61 = 1,682.20/x
  3. Step 3: Cross multiply
    3,079.45x = 4,249.61 × 1,682.20
  4. Step 4: Simplify right side
    3,079.45x = 7,148,693.94
  5. Step 5: Solve for x
    x = 7,148,693.94/3,079.45
  6. Step 6: Final answer
    x = 2,321.42

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1.5x scale

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.