Home / 1,817.72-2,728.20-1,270.34

Finding the Fourth Proportional to 1,817.72, 2,728.20 and 1,270.34

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Solution

The fourth proportional to 1,817.72, 2,728.20 and 1,270.34 is: 1,906.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.72 : 2,728.20 = 1,270.34 : x
  2. Step 2: Convert to fraction form
    1,817.72/2,728.20 = 1,270.34/x
  3. Step 3: Cross multiply
    1,817.72x = 2,728.20 × 1,270.34
  4. Step 4: Simplify right side
    1,817.72x = 3,465,753.17
  5. Step 5: Solve for x
    x = 3,465,753.17/1,817.72
  6. Step 6: Final answer
    x = 1,906.65

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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.