Home / 3,246.92-4,480.76-1,921.28

Finding the Fourth Proportional to 3,246.92, 4,480.76 and 1,921.28

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Solution

The fourth proportional to 3,246.92, 4,480.76 and 1,921.28 is: 2,651.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,246.92 : 4,480.76 = 1,921.28 : x
  2. Step 2: Convert to fraction form
    3,246.92/4,480.76 = 1,921.28/x
  3. Step 3: Cross multiply
    3,246.92x = 4,480.76 × 1,921.28
  4. Step 4: Simplify right side
    3,246.92x = 8,608,794.57
  5. Step 5: Solve for x
    x = 8,608,794.57/3,246.92
  6. Step 6: Final answer
    x = 2,651.37

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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.