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Finding the Fourth Proportional to 3,910.66, 5,865.77 and 1,099.68

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Solution

The fourth proportional to 3,910.66, 5,865.77 and 1,099.68 is: 1,649.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.66 : 5,865.77 = 1,099.68 : x
  2. Step 2: Convert to fraction form
    3,910.66/5,865.77 = 1,099.68/x
  3. Step 3: Cross multiply
    3,910.66x = 5,865.77 × 1,099.68
  4. Step 4: Simplify right side
    3,910.66x = 6,450,435.13
  5. Step 5: Solve for x
    x = 6,450,435.13/3,910.66
  6. Step 6: Final answer
    x = 1,649.45

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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.