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Finding the Fourth Proportional to 2,486.57, 3,730.72 and 1,099.72

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Solution

The fourth proportional to 2,486.57, 3,730.72 and 1,099.72 is: 1,649.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.57 : 3,730.72 = 1,099.72 : x
  2. Step 2: Convert to fraction form
    2,486.57/3,730.72 = 1,099.72/x
  3. Step 3: Cross multiply
    2,486.57x = 3,730.72 × 1,099.72
  4. Step 4: Simplify right side
    2,486.57x = 4,102,747.40
  5. Step 5: Solve for x
    x = 4,102,747.40/2,486.57
  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.