Home / 1,368.20-2,049.10-849.80

Finding the Fourth Proportional to 1,368.20, 2,049.10 and 849.80

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Solution

The fourth proportional to 1,368.20, 2,049.10 and 849.80 is: 1,272.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.20 : 2,049.10 = 849.80 : x
  2. Step 2: Convert to fraction form
    1,368.20/2,049.10 = 849.80/x
  3. Step 3: Cross multiply
    1,368.20x = 2,049.10 × 849.80
  4. Step 4: Simplify right side
    1,368.20x = 1,741,325.18
  5. Step 5: Solve for x
    x = 1,741,325.18/1,368.20
  6. Step 6: Final answer
    x = 1,272.71

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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.