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Finding the Fourth Proportional to 1,786.44, 2,678.41 and 908.27

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Solution

The fourth proportional to 1,786.44, 2,678.41 and 908.27 is: 1,361.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.44 : 2,678.41 = 908.27 : x
  2. Step 2: Convert to fraction form
    1,786.44/2,678.41 = 908.27/x
  3. Step 3: Cross multiply
    1,786.44x = 2,678.41 × 908.27
  4. Step 4: Simplify right side
    1,786.44x = 2,432,719.45
  5. Step 5: Solve for x
    x = 2,432,719.45/1,786.44
  6. Step 6: Final answer
    x = 1,361.77

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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.