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Finding the Fourth Proportional to 3,687.80, 5,530.82 and 1,055.22

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Solution

The fourth proportional to 3,687.80, 5,530.82 and 1,055.22 is: 1,582.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.80 : 5,530.82 = 1,055.22 : x
  2. Step 2: Convert to fraction form
    3,687.80/5,530.82 = 1,055.22/x
  3. Step 3: Cross multiply
    3,687.80x = 5,530.82 × 1,055.22
  4. Step 4: Simplify right side
    3,687.80x = 5,836,231.88
  5. Step 5: Solve for x
    x = 5,836,231.88/3,687.80
  6. Step 6: Final answer
    x = 1,582.58

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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.