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Finding the Fourth Proportional to 3,762.66, 5,635.80 and 1,910.61

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Solution

The fourth proportional to 3,762.66, 5,635.80 and 1,910.61 is: 2,861.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,762.66 : 5,635.80 = 1,910.61 : x
  2. Step 2: Convert to fraction form
    3,762.66/5,635.80 = 1,910.61/x
  3. Step 3: Cross multiply
    3,762.66x = 5,635.80 × 1,910.61
  4. Step 4: Simplify right side
    3,762.66x = 10,767,815.84
  5. Step 5: Solve for x
    x = 10,767,815.84/3,762.66
  6. Step 6: Final answer
    x = 2,861.76

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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.