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Finding the Fourth Proportional to 3,388, 5,082 and 1,079.68

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Solution

The fourth proportional to 3,388, 5,082 and 1,079.68 is: 1,619.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388 : 5,082 = 1,079.68 : x
  2. Step 2: Convert to fraction form
    3,388/5,082 = 1,079.68/x
  3. Step 3: Cross multiply
    3,388x = 5,082 × 1,079.68
  4. Step 4: Simplify right side
    3,388x = 5,486,933.76
  5. Step 5: Solve for x
    x = 5,486,933.76/3,388
  6. Step 6: Final answer
    x = 1,619.52

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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.