Home / 3,180.92-4,391.16-2,133.68

Finding the Fourth Proportional to 3,180.92, 4,391.16 and 2,133.68

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Solution

The fourth proportional to 3,180.92, 4,391.16 and 2,133.68 is: 2,945.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.92 : 4,391.16 = 2,133.68 : x
  2. Step 2: Convert to fraction form
    3,180.92/4,391.16 = 2,133.68/x
  3. Step 3: Cross multiply
    3,180.92x = 4,391.16 × 2,133.68
  4. Step 4: Simplify right side
    3,180.92x = 9,369,330.27
  5. Step 5: Solve for x
    x = 9,369,330.27/3,180.92
  6. Step 6: Final answer
    x = 2,945.48

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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.