Home / 3,121.43-4,308.29-2,059.38

Finding the Fourth Proportional to 3,121.43, 4,308.29 and 2,059.38

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Solution

The fourth proportional to 3,121.43, 4,308.29 and 2,059.38 is: 2,842.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.43 : 4,308.29 = 2,059.38 : x
  2. Step 2: Convert to fraction form
    3,121.43/4,308.29 = 2,059.38/x
  3. Step 3: Cross multiply
    3,121.43x = 4,308.29 × 2,059.38
  4. Step 4: Simplify right side
    3,121.43x = 8,872,395.96
  5. Step 5: Solve for x
    x = 8,872,395.96/3,121.43
  6. Step 6: Final answer
    x = 2,842.42

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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.