Home / 3,079.70-4,249.98-1,682.45

Finding the Fourth Proportional to 3,079.70, 4,249.98 and 1,682.45

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Solution

The fourth proportional to 3,079.70, 4,249.98 and 1,682.45 is: 2,321.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.70 : 4,249.98 = 1,682.45 : x
  2. Step 2: Convert to fraction form
    3,079.70/4,249.98 = 1,682.45/x
  3. Step 3: Cross multiply
    3,079.70x = 4,249.98 × 1,682.45
  4. Step 4: Simplify right side
    3,079.70x = 7,150,378.85
  5. Step 5: Solve for x
    x = 7,150,378.85/3,079.70
  6. Step 6: Final answer
    x = 2,321.78

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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.