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Finding the Fourth Proportional to 2,757.13, 4,136.31 and 908.17

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Solution

The fourth proportional to 2,757.13, 4,136.31 and 908.17 is: 1,362.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.13 : 4,136.31 = 908.17 : x
  2. Step 2: Convert to fraction form
    2,757.13/4,136.31 = 908.17/x
  3. Step 3: Cross multiply
    2,757.13x = 4,136.31 × 908.17
  4. Step 4: Simplify right side
    2,757.13x = 3,756,447.43
  5. Step 5: Solve for x
    x = 3,756,447.43/2,757.13
  6. Step 6: Final answer
    x = 1,362.45

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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.