Home / 1,512.20-2,086.85-849.06

Finding the Fourth Proportional to 1,512.20, 2,086.85 and 849.06

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Solution

The fourth proportional to 1,512.20, 2,086.85 and 849.06 is: 1,171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.20 : 2,086.85 = 849.06 : x
  2. Step 2: Convert to fraction form
    1,512.20/2,086.85 = 849.06/x
  3. Step 3: Cross multiply
    1,512.20x = 2,086.85 × 849.06
  4. Step 4: Simplify right side
    1,512.20x = 1,771,856.62
  5. Step 5: Solve for x
    x = 1,771,856.62/1,512.20
  6. Step 6: Final answer
    x = 1,171.71

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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.