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Finding the Fourth Proportional to 3,748.62, 5,620.77 and 1,437.42

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Solution

The fourth proportional to 3,748.62, 5,620.77 and 1,437.42 is: 2,155.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,748.62 : 5,620.77 = 1,437.42 : x
  2. Step 2: Convert to fraction form
    3,748.62/5,620.77 = 1,437.42/x
  3. Step 3: Cross multiply
    3,748.62x = 5,620.77 × 1,437.42
  4. Step 4: Simplify right side
    3,748.62x = 8,079,407.21
  5. Step 5: Solve for x
    x = 8,079,407.21/3,748.62
  6. Step 6: Final answer
    x = 2,155.30

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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.