Home / 3,847.75-5,309.90-2,451.31

Finding the Fourth Proportional to 3,847.75, 5,309.90 and 2,451.31

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Solution

The fourth proportional to 3,847.75, 5,309.90 and 2,451.31 is: 3,382.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.75 : 5,309.90 = 2,451.31 : x
  2. Step 2: Convert to fraction form
    3,847.75/5,309.90 = 2,451.31/x
  3. Step 3: Cross multiply
    3,847.75x = 5,309.90 × 2,451.31
  4. Step 4: Simplify right side
    3,847.75x = 13,016,210.97
  5. Step 5: Solve for x
    x = 13,016,210.97/3,847.75
  6. Step 6: Final answer
    x = 3,382.81

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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.