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Finding the Fourth Proportional to 3,619, 5,429.52 and 1,539.32

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Solution

The fourth proportional to 3,619, 5,429.52 and 1,539.32 is: 2,309.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619 : 5,429.52 = 1,539.32 : x
  2. Step 2: Convert to fraction form
    3,619/5,429.52 = 1,539.32/x
  3. Step 3: Cross multiply
    3,619x = 5,429.52 × 1,539.32
  4. Step 4: Simplify right side
    3,619x = 8,357,768.73
  5. Step 5: Solve for x
    x = 8,357,768.73/3,619
  6. Step 6: Final answer
    x = 2,309.41

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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.