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Finding the Fourth Proportional to 2,099.76, 3,144.85 and 1,004.90

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Solution

The fourth proportional to 2,099.76, 3,144.85 and 1,004.90 is: 1,505.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.76 : 3,144.85 = 1,004.90 : x
  2. Step 2: Convert to fraction form
    2,099.76/3,144.85 = 1,004.90/x
  3. Step 3: Cross multiply
    2,099.76x = 3,144.85 × 1,004.90
  4. Step 4: Simplify right side
    2,099.76x = 3,160,257.09
  5. Step 5: Solve for x
    x = 3,160,257.09/2,099.76
  6. Step 6: Final answer
    x = 1,505.06

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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.