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Finding the Fourth Proportional to 3,291.02, 4,936.90 and 1,099.90

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Solution

The fourth proportional to 3,291.02, 4,936.90 and 1,099.90 is: 1,649.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.02 : 4,936.90 = 1,099.90 : x
  2. Step 2: Convert to fraction form
    3,291.02/4,936.90 = 1,099.90/x
  3. Step 3: Cross multiply
    3,291.02x = 4,936.90 × 1,099.90
  4. Step 4: Simplify right side
    3,291.02x = 5,430,096.31
  5. Step 5: Solve for x
    x = 5,430,096.31/3,291.02
  6. Step 6: Final answer
    x = 1,649.97

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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.