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Finding the Fourth Proportional to 8,690.86, 13,026.26 and 3,755.52

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Solution

The fourth proportional to 8,690.86, 13,026.26 and 3,755.52 is: 5,628.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.86 : 13,026.26 = 3,755.52 : x
  2. Step 2: Convert to fraction form
    8,690.86/13,026.26 = 3,755.52/x
  3. Step 3: Cross multiply
    8,690.86x = 13,026.26 × 3,755.52
  4. Step 4: Simplify right side
    8,690.86x = 48,920,379.96
  5. Step 5: Solve for x
    x = 48,920,379.96/8,690.86
  6. Step 6: Final answer
    x = 5,628.95

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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.