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Finding the Fourth Proportional to 2,287.90, 3,432.02 and 727.84

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Solution

The fourth proportional to 2,287.90, 3,432.02 and 727.84 is: 1,091.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.90 : 3,432.02 = 727.84 : x
  2. Step 2: Convert to fraction form
    2,287.90/3,432.02 = 727.84/x
  3. Step 3: Cross multiply
    2,287.90x = 3,432.02 × 727.84
  4. Step 4: Simplify right side
    2,287.90x = 2,497,946.88
  5. Step 5: Solve for x
    x = 2,497,946.88/2,287.90
  6. Step 6: Final answer
    x = 1,091.81

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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.