Home / 2,120.30-3,164.96-1,963.97

Finding the Fourth Proportional to 2,120.30, 3,164.96 and 1,963.97

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Solution

The fourth proportional to 2,120.30, 3,164.96 and 1,963.97 is: 2,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.30 : 3,164.96 = 1,963.97 : x
  2. Step 2: Convert to fraction form
    2,120.30/3,164.96 = 1,963.97/x
  3. Step 3: Cross multiply
    2,120.30x = 3,164.96 × 1,963.97
  4. Step 4: Simplify right side
    2,120.30x = 6,215,886.49
  5. Step 5: Solve for x
    x = 6,215,886.49/2,120.30
  6. Step 6: Final answer
    x = 2,931.61

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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.