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Finding the Fourth Proportional to 8,539.38, 12,810.12 and 2,917.98

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Solution

The fourth proportional to 8,539.38, 12,810.12 and 2,917.98 is: 4,377.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.38 : 12,810.12 = 2,917.98 : x
  2. Step 2: Convert to fraction form
    8,539.38/12,810.12 = 2,917.98/x
  3. Step 3: Cross multiply
    8,539.38x = 12,810.12 × 2,917.98
  4. Step 4: Simplify right side
    8,539.38x = 37,379,673.96
  5. Step 5: Solve for x
    x = 37,379,673.96/8,539.38
  6. Step 6: Final answer
    x = 4,377.33

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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.