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Finding the Fourth Proportional to 8,238.85, 12,355.71 and 2,973.17

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Solution

The fourth proportional to 8,238.85, 12,355.71 and 2,973.17 is: 4,458.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,238.85 : 12,355.71 = 2,973.17 : x
  2. Step 2: Convert to fraction form
    8,238.85/12,355.71 = 2,973.17/x
  3. Step 3: Cross multiply
    8,238.85x = 12,355.71 × 2,973.17
  4. Step 4: Simplify right side
    8,238.85x = 36,735,626.30
  5. Step 5: Solve for x
    x = 36,735,626.30/8,238.85
  6. Step 6: Final answer
    x = 4,458.83

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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.