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Finding the Fourth Proportional to 2,754.36, 4,132.53 and 905.49

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Solution

The fourth proportional to 2,754.36, 4,132.53 and 905.49 is: 1,358.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,754.36 : 4,132.53 = 905.49 : x
  2. Step 2: Convert to fraction form
    2,754.36/4,132.53 = 905.49/x
  3. Step 3: Cross multiply
    2,754.36x = 4,132.53 × 905.49
  4. Step 4: Simplify right side
    2,754.36x = 3,741,964.59
  5. Step 5: Solve for x
    x = 3,741,964.59/2,754.36
  6. Step 6: Final answer
    x = 1,358.56

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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.