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Finding the Fourth Proportional to 3,676.87, 5,516.23 and 1,079.81

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Solution

The fourth proportional to 3,676.87, 5,516.23 and 1,079.81 is: 1,619.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,676.87 : 5,516.23 = 1,079.81 : x
  2. Step 2: Convert to fraction form
    3,676.87/5,516.23 = 1,079.81/x
  3. Step 3: Cross multiply
    3,676.87x = 5,516.23 × 1,079.81
  4. Step 4: Simplify right side
    3,676.87x = 5,956,447.34
  5. Step 5: Solve for x
    x = 5,956,447.34/3,676.87
  6. Step 6: Final answer
    x = 1,619.98

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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.