Home / 2,685.92-4,010.68-2,131.88

Finding the Fourth Proportional to 2,685.92, 4,010.68 and 2,131.88

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Solution

The fourth proportional to 2,685.92, 4,010.68 and 2,131.88 is: 3,183.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.92 : 4,010.68 = 2,131.88 : x
  2. Step 2: Convert to fraction form
    2,685.92/4,010.68 = 2,131.88/x
  3. Step 3: Cross multiply
    2,685.92x = 4,010.68 × 2,131.88
  4. Step 4: Simplify right side
    2,685.92x = 8,550,288.48
  5. Step 5: Solve for x
    x = 8,550,288.48/2,685.92
  6. Step 6: Final answer
    x = 3,183.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.