Home / 2,119.38-3,179.10-963.78

Finding the Fourth Proportional to 2,119.38, 3,179.10 and 963.78

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Solution

The fourth proportional to 2,119.38, 3,179.10 and 963.78 is: 1,445.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.38 : 3,179.10 = 963.78 : x
  2. Step 2: Convert to fraction form
    2,119.38/3,179.10 = 963.78/x
  3. Step 3: Cross multiply
    2,119.38x = 3,179.10 × 963.78
  4. Step 4: Simplify right side
    2,119.38x = 3,063,953.00
  5. Step 5: Solve for x
    x = 3,063,953.00/2,119.38
  6. Step 6: Final answer
    x = 1,445.68

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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.