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Finding the Fourth Proportional to 2,757.45, 4,136.18 and 908.06

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Solution

The fourth proportional to 2,757.45, 4,136.18 and 908.06 is: 1,362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.45 : 4,136.18 = 908.06 : x
  2. Step 2: Convert to fraction form
    2,757.45/4,136.18 = 908.06/x
  3. Step 3: Cross multiply
    2,757.45x = 4,136.18 × 908.06
  4. Step 4: Simplify right side
    2,757.45x = 3,755,905.41
  5. Step 5: Solve for x
    x = 3,755,905.41/2,757.45
  6. Step 6: Final answer
    x = 1,362.09

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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.