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Finding the Fourth Proportional to 3,687.54, 5,530.11 and 1,378.50

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Solution

The fourth proportional to 3,687.54, 5,530.11 and 1,378.50 is: 2,067.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.54 : 5,530.11 = 1,378.50 : x
  2. Step 2: Convert to fraction form
    3,687.54/5,530.11 = 1,378.50/x
  3. Step 3: Cross multiply
    3,687.54x = 5,530.11 × 1,378.50
  4. Step 4: Simplify right side
    3,687.54x = 7,623,256.64
  5. Step 5: Solve for x
    x = 7,623,256.64/3,687.54
  6. Step 6: Final answer
    x = 2,067.30

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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.