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Finding the Fourth Proportional to 3,753.20, 5,179.40 and 2,097.20

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Solution

The fourth proportional to 3,753.20, 5,179.40 and 2,097.20 is: 2,894.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,753.20 : 5,179.40 = 2,097.20 : x
  2. Step 2: Convert to fraction form
    3,753.20/5,179.40 = 2,097.20/x
  3. Step 3: Cross multiply
    3,753.20x = 5,179.40 × 2,097.20
  4. Step 4: Simplify right side
    3,753.20x = 10,862,201.30
  5. Step 5: Solve for x
    x = 10,862,201.30/3,753.20
  6. Step 6: Final answer
    x = 2,894.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.