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Finding the Fourth Proportional to 2,181.00, 3,009.76 and 1,296.78

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Solution

The fourth proportional to 2,181.00, 3,009.76 and 1,296.78 is: 1,789.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.00 : 3,009.76 = 1,296.78 : x
  2. Step 2: Convert to fraction form
    2,181.00/3,009.76 = 1,296.78/x
  3. Step 3: Cross multiply
    2,181.00x = 3,009.76 × 1,296.78
  4. Step 4: Simplify right side
    2,181.00x = 3,903,007.44
  5. Step 5: Solve for x
    x = 3,903,007.44/2,181.00
  6. Step 6: Final answer
    x = 1,789.55

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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.