Home / 8,517.72-11,755.62-4,981.80

Finding the Fourth Proportional to 8,517.72, 11,755.62 and 4,981.80

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Solution

The fourth proportional to 8,517.72, 11,755.62 and 4,981.80 is: 6,875.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.72 : 11,755.62 = 4,981.80 : x
  2. Step 2: Convert to fraction form
    8,517.72/11,755.62 = 4,981.80/x
  3. Step 3: Cross multiply
    8,517.72x = 11,755.62 × 4,981.80
  4. Step 4: Simplify right side
    8,517.72x = 58,564,147.72
  5. Step 5: Solve for x
    x = 58,564,147.72/8,517.72
  6. Step 6: Final answer
    x = 6,875.57

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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.