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Finding the Fourth Proportional to 5,619.78, 7,755.22 and 3,101.94

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Solution

The fourth proportional to 5,619.78, 7,755.22 and 3,101.94 is: 4,280.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.78 : 7,755.22 = 3,101.94 : x
  2. Step 2: Convert to fraction form
    5,619.78/7,755.22 = 3,101.94/x
  3. Step 3: Cross multiply
    5,619.78x = 7,755.22 × 3,101.94
  4. Step 4: Simplify right side
    5,619.78x = 24,056,234.88
  5. Step 5: Solve for x
    x = 24,056,234.88/5,619.78
  6. Step 6: Final answer
    x = 4,280.63

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1.5x scale

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.