Home / 3,121.96-4,682.92-1,273.04

Finding the Fourth Proportional to 3,121.96, 4,682.92 and 1,273.04

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Solution

The fourth proportional to 3,121.96, 4,682.92 and 1,273.04 is: 1,909.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.96 : 4,682.92 = 1,273.04 : x
  2. Step 2: Convert to fraction form
    3,121.96/4,682.92 = 1,273.04/x
  3. Step 3: Cross multiply
    3,121.96x = 4,682.92 × 1,273.04
  4. Step 4: Simplify right side
    3,121.96x = 5,961,544.48
  5. Step 5: Solve for x
    x = 5,961,544.48/3,121.96
  6. Step 6: Final answer
    x = 1,909.55

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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.