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Finding the Fourth Proportional to 2,707.28, 4,060.92 and 759.48

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Solution

The fourth proportional to 2,707.28, 4,060.92 and 759.48 is: 1,139.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,707.28 : 4,060.92 = 759.48 : x
  2. Step 2: Convert to fraction form
    2,707.28/4,060.92 = 759.48/x
  3. Step 3: Cross multiply
    2,707.28x = 4,060.92 × 759.48
  4. Step 4: Simplify right side
    2,707.28x = 3,084,187.52
  5. Step 5: Solve for x
    x = 3,084,187.52/2,707.28
  6. Step 6: Final answer
    x = 1,139.22

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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.