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Finding the Fourth Proportional to 3,390.63, 5,086.03 and 1,082.13

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Solution

The fourth proportional to 3,390.63, 5,086.03 and 1,082.13 is: 1,623.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.63 : 5,086.03 = 1,082.13 : x
  2. Step 2: Convert to fraction form
    3,390.63/5,086.03 = 1,082.13/x
  3. Step 3: Cross multiply
    3,390.63x = 5,086.03 × 1,082.13
  4. Step 4: Simplify right side
    3,390.63x = 5,503,745.64
  5. Step 5: Solve for x
    x = 5,503,745.64/3,390.63
  6. Step 6: Final answer
    x = 1,623.22

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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.