Home / 3,079.60-4,249.78-1,682.35

Finding the Fourth Proportional to 3,079.60, 4,249.78 and 1,682.35

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Solution

The fourth proportional to 3,079.60, 4,249.78 and 1,682.35 is: 2,321.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.60 : 4,249.78 = 1,682.35 : x
  2. Step 2: Convert to fraction form
    3,079.60/4,249.78 = 1,682.35/x
  3. Step 3: Cross multiply
    3,079.60x = 4,249.78 × 1,682.35
  4. Step 4: Simplify right side
    3,079.60x = 7,149,617.38
  5. Step 5: Solve for x
    x = 7,149,617.38/3,079.60
  6. Step 6: Final answer
    x = 2,321.61

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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.