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Finding the Fourth Proportional to 1,786.04, 2,679.36 and 908.96

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Solution

The fourth proportional to 1,786.04, 2,679.36 and 908.96 is: 1,363.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.04 : 2,679.36 = 908.96 : x
  2. Step 2: Convert to fraction form
    1,786.04/2,679.36 = 908.96/x
  3. Step 3: Cross multiply
    1,786.04x = 2,679.36 × 908.96
  4. Step 4: Simplify right side
    1,786.04x = 2,435,431.07
  5. Step 5: Solve for x
    x = 2,435,431.07/1,786.04
  6. Step 6: Final answer
    x = 1,363.59

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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.