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Finding the Fourth Proportional to 3,170.41, 4,755.49 and 979.13

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Solution

The fourth proportional to 3,170.41, 4,755.49 and 979.13 is: 1,468.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.41 : 4,755.49 = 979.13 : x
  2. Step 2: Convert to fraction form
    3,170.41/4,755.49 = 979.13/x
  3. Step 3: Cross multiply
    3,170.41x = 4,755.49 × 979.13
  4. Step 4: Simplify right side
    3,170.41x = 4,656,257.87
  5. Step 5: Solve for x
    x = 4,656,257.87/3,170.41
  6. Step 6: Final answer
    x = 1,468.66

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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.