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Finding the Fourth Proportional to 2,180.93, 3,270.17 and 719.96

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Solution

The fourth proportional to 2,180.93, 3,270.17 and 719.96 is: 1,079.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.93 : 3,270.17 = 719.96 : x
  2. Step 2: Convert to fraction form
    2,180.93/3,270.17 = 719.96/x
  3. Step 3: Cross multiply
    2,180.93x = 3,270.17 × 719.96
  4. Step 4: Simplify right side
    2,180.93x = 2,354,371.64
  5. Step 5: Solve for x
    x = 2,354,371.64/2,180.93
  6. Step 6: Final answer
    x = 1,079.53

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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.