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Finding the Fourth Proportional to 3,618.57, 4,996.20 and 2,861.22

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Solution

The fourth proportional to 3,618.57, 4,996.20 and 2,861.22 is: 3,950.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.57 : 4,996.20 = 2,861.22 : x
  2. Step 2: Convert to fraction form
    3,618.57/4,996.20 = 2,861.22/x
  3. Step 3: Cross multiply
    3,618.57x = 4,996.20 × 2,861.22
  4. Step 4: Simplify right side
    3,618.57x = 14,295,227.36
  5. Step 5: Solve for x
    x = 14,295,227.36/3,618.57
  6. Step 6: Final answer
    x = 3,950.52

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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.