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Finding the Fourth Proportional to 3,453.30, 5,181.50 and 1,809.47

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Solution

The fourth proportional to 3,453.30, 5,181.50 and 1,809.47 is: 2,715.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.30 : 5,181.50 = 1,809.47 : x
  2. Step 2: Convert to fraction form
    3,453.30/5,181.50 = 1,809.47/x
  3. Step 3: Cross multiply
    3,453.30x = 5,181.50 × 1,809.47
  4. Step 4: Simplify right side
    3,453.30x = 9,375,733.85
  5. Step 5: Solve for x
    x = 9,375,733.85/3,453.30
  6. Step 6: Final answer
    x = 2,715.01

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.