Home / 5,105.80-7,661.31-2,183.32

Finding the Fourth Proportional to 5,105.80, 7,661.31 and 2,183.32

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Solution

The fourth proportional to 5,105.80, 7,661.31 and 2,183.32 is: 3,276.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.80 : 7,661.31 = 2,183.32 : x
  2. Step 2: Convert to fraction form
    5,105.80/7,661.31 = 2,183.32/x
  3. Step 3: Cross multiply
    5,105.80x = 7,661.31 × 2,183.32
  4. Step 4: Simplify right side
    5,105.80x = 16,727,091.35
  5. Step 5: Solve for x
    x = 16,727,091.35/5,105.80
  6. Step 6: Final answer
    x = 3,276.10

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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.