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Finding the Fourth Proportional to 2,188.84, 3,282.54 and 727.60

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Solution

The fourth proportional to 2,188.84, 3,282.54 and 727.60 is: 1,091.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.84 : 3,282.54 = 727.60 : x
  2. Step 2: Convert to fraction form
    2,188.84/3,282.54 = 727.60/x
  3. Step 3: Cross multiply
    2,188.84x = 3,282.54 × 727.60
  4. Step 4: Simplify right side
    2,188.84x = 2,388,359.69
  5. Step 5: Solve for x
    x = 2,388,359.69/2,188.84
  6. Step 6: Final answer
    x = 1,091.16

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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.