Home / 2,120.63-3,178.39-1,195.97

Finding the Fourth Proportional to 2,120.63, 3,178.39 and 1,195.97

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Solution

The fourth proportional to 2,120.63, 3,178.39 and 1,195.97 is: 1,792.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.63 : 3,178.39 = 1,195.97 : x
  2. Step 2: Convert to fraction form
    2,120.63/3,178.39 = 1,195.97/x
  3. Step 3: Cross multiply
    2,120.63x = 3,178.39 × 1,195.97
  4. Step 4: Simplify right side
    2,120.63x = 3,801,242.45
  5. Step 5: Solve for x
    x = 3,801,242.45/2,120.63
  6. Step 6: Final answer
    x = 1,792.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.