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Finding the Fourth Proportional to 8,369.73, 12,539.30 and 3,919.23

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Solution

The fourth proportional to 8,369.73, 12,539.30 and 3,919.23 is: 5,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.73 : 12,539.30 = 3,919.23 : x
  2. Step 2: Convert to fraction form
    8,369.73/12,539.30 = 3,919.23/x
  3. Step 3: Cross multiply
    8,369.73x = 12,539.30 × 3,919.23
  4. Step 4: Simplify right side
    8,369.73x = 49,144,381.14
  5. Step 5: Solve for x
    x = 49,144,381.14/8,369.73
  6. Step 6: Final answer
    x = 5,871.68

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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.