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Finding the Fourth Proportional to 2,754.42, 4,132.09 and 905.13

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Solution

The fourth proportional to 2,754.42, 4,132.09 and 905.13 is: 1,357.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,754.42 : 4,132.09 = 905.13 : x
  2. Step 2: Convert to fraction form
    2,754.42/4,132.09 = 905.13/x
  3. Step 3: Cross multiply
    2,754.42x = 4,132.09 × 905.13
  4. Step 4: Simplify right side
    2,754.42x = 3,740,078.62
  5. Step 5: Solve for x
    x = 3,740,078.62/2,754.42
  6. Step 6: Final answer
    x = 1,357.85

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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.