Home / 2,079.54-3,120.55-829.91

Finding the Fourth Proportional to 2,079.54, 3,120.55 and 829.91

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Solution

The fourth proportional to 2,079.54, 3,120.55 and 829.91 is: 1,245.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.54 : 3,120.55 = 829.91 : x
  2. Step 2: Convert to fraction form
    2,079.54/3,120.55 = 829.91/x
  3. Step 3: Cross multiply
    2,079.54x = 3,120.55 × 829.91
  4. Step 4: Simplify right side
    2,079.54x = 2,589,777.73
  5. Step 5: Solve for x
    x = 2,589,777.73/2,079.54
  6. Step 6: Final answer
    x = 1,245.36

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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.