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Finding the Fourth Proportional to 8,758.26, 12,085.34 and 4,981.91

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Solution

The fourth proportional to 8,758.26, 12,085.34 and 4,981.91 is: 6,874.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.26 : 12,085.34 = 4,981.91 : x
  2. Step 2: Convert to fraction form
    8,758.26/12,085.34 = 4,981.91/x
  3. Step 3: Cross multiply
    8,758.26x = 12,085.34 × 4,981.91
  4. Step 4: Simplify right side
    8,758.26x = 60,207,990.86
  5. Step 5: Solve for x
    x = 60,207,990.86/8,758.26
  6. Step 6: Final answer
    x = 6,874.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.