Home / 3,960.60-5,465.78-2,192.16

Finding the Fourth Proportional to 3,960.60, 5,465.78 and 2,192.16

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Solution

The fourth proportional to 3,960.60, 5,465.78 and 2,192.16 is: 3,025.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.60 : 5,465.78 = 2,192.16 : x
  2. Step 2: Convert to fraction form
    3,960.60/5,465.78 = 2,192.16/x
  3. Step 3: Cross multiply
    3,960.60x = 5,465.78 × 2,192.16
  4. Step 4: Simplify right side
    3,960.60x = 11,981,864.28
  5. Step 5: Solve for x
    x = 11,981,864.28/3,960.60
  6. Step 6: Final answer
    x = 3,025.26

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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.