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Finding the Fourth Proportional to 3,691.63, 5,541.09 and 1,960.25

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Solution

The fourth proportional to 3,691.63, 5,541.09 and 1,960.25 is: 2,942.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.63 : 5,541.09 = 1,960.25 : x
  2. Step 2: Convert to fraction form
    3,691.63/5,541.09 = 1,960.25/x
  3. Step 3: Cross multiply
    3,691.63x = 5,541.09 × 1,960.25
  4. Step 4: Simplify right side
    3,691.63x = 10,861,921.67
  5. Step 5: Solve for x
    x = 10,861,921.67/3,691.63
  6. Step 6: Final answer
    x = 2,942.31

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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.