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Finding the Fourth Proportional to 3,388.63, 5,082.43 and 1,309.62

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Solution

The fourth proportional to 3,388.63, 5,082.43 and 1,309.62 is: 1,964.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.63 : 5,082.43 = 1,309.62 : x
  2. Step 2: Convert to fraction form
    3,388.63/5,082.43 = 1,309.62/x
  3. Step 3: Cross multiply
    3,388.63x = 5,082.43 × 1,309.62
  4. Step 4: Simplify right side
    3,388.63x = 6,656,051.98
  5. Step 5: Solve for x
    x = 6,656,051.98/3,388.63
  6. Step 6: Final answer
    x = 1,964.23

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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.