Home / 3,112.92-4,292.04-2,169.54

Finding the Fourth Proportional to 3,112.92, 4,292.04 and 2,169.54

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Solution

The fourth proportional to 3,112.92, 4,292.04 and 2,169.54 is: 2,991.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.92 : 4,292.04 = 2,169.54 : x
  2. Step 2: Convert to fraction form
    3,112.92/4,292.04 = 2,169.54/x
  3. Step 3: Cross multiply
    3,112.92x = 4,292.04 × 2,169.54
  4. Step 4: Simplify right side
    3,112.92x = 9,311,752.46
  5. Step 5: Solve for x
    x = 9,311,752.46/3,112.92
  6. Step 6: Final answer
    x = 2,991.32

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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.