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Finding the Fourth Proportional to 2,757.06, 4,132.92 and 906.90

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Solution

The fourth proportional to 2,757.06, 4,132.92 and 906.90 is: 1,359.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.06 : 4,132.92 = 906.90 : x
  2. Step 2: Convert to fraction form
    2,757.06/4,132.92 = 906.90/x
  3. Step 3: Cross multiply
    2,757.06x = 4,132.92 × 906.90
  4. Step 4: Simplify right side
    2,757.06x = 3,748,145.15
  5. Step 5: Solve for x
    x = 3,748,145.15/2,757.06
  6. Step 6: Final answer
    x = 1,359.47

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1.5x scale

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.