Home / 3,139.87-4,332.14-2,021.46

Finding the Fourth Proportional to 3,139.87, 4,332.14 and 2,021.46

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Solution

The fourth proportional to 3,139.87, 4,332.14 and 2,021.46 is: 2,789.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.87 : 4,332.14 = 2,021.46 : x
  2. Step 2: Convert to fraction form
    3,139.87/4,332.14 = 2,021.46/x
  3. Step 3: Cross multiply
    3,139.87x = 4,332.14 × 2,021.46
  4. Step 4: Simplify right side
    3,139.87x = 8,757,229.31
  5. Step 5: Solve for x
    x = 8,757,229.31/3,139.87
  6. Step 6: Final answer
    x = 2,789.04

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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.