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Finding the Fourth Proportional to 3,663.72, 5,482.80 and 2,997.90

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Solution

The fourth proportional to 3,663.72, 5,482.80 and 2,997.90 is: 4,486.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,663.72 : 5,482.80 = 2,997.90 : x
  2. Step 2: Convert to fraction form
    3,663.72/5,482.80 = 2,997.90/x
  3. Step 3: Cross multiply
    3,663.72x = 5,482.80 × 2,997.90
  4. Step 4: Simplify right side
    3,663.72x = 16,436,886.12
  5. Step 5: Solve for x
    x = 16,436,886.12/3,663.72
  6. Step 6: Final answer
    x = 4,486.39

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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.