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Finding the Fourth Proportional to 3,677.79, 5,518.22 and 1,485.96

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Solution

The fourth proportional to 3,677.79, 5,518.22 and 1,485.96 is: 2,229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,677.79 : 5,518.22 = 1,485.96 : x
  2. Step 2: Convert to fraction form
    3,677.79/5,518.22 = 1,485.96/x
  3. Step 3: Cross multiply
    3,677.79x = 5,518.22 × 1,485.96
  4. Step 4: Simplify right side
    3,677.79x = 8,199,846.76
  5. Step 5: Solve for x
    x = 8,199,846.76/3,677.79
  6. Step 6: Final answer
    x = 2,229.56

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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.