Home / 3,122.75-4,309.34-1,796.38

Finding the Fourth Proportional to 3,122.75, 4,309.34 and 1,796.38

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Solution

The fourth proportional to 3,122.75, 4,309.34 and 1,796.38 is: 2,478.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.75 : 4,309.34 = 1,796.38 : x
  2. Step 2: Convert to fraction form
    3,122.75/4,309.34 = 1,796.38/x
  3. Step 3: Cross multiply
    3,122.75x = 4,309.34 × 1,796.38
  4. Step 4: Simplify right side
    3,122.75x = 7,741,192.43
  5. Step 5: Solve for x
    x = 7,741,192.43/3,122.75
  6. Step 6: Final answer
    x = 2,478.96

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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.