Home / 1,914.03-2,871.34-1,809

Finding the Fourth Proportional to 1,914.03, 2,871.34 and 1,809

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Solution

The fourth proportional to 1,914.03, 2,871.34 and 1,809 is: 2,713.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.03 : 2,871.34 = 1,809 : x
  2. Step 2: Convert to fraction form
    1,914.03/2,871.34 = 1,809/x
  3. Step 3: Cross multiply
    1,914.03x = 2,871.34 × 1,809
  4. Step 4: Simplify right side
    1,914.03x = 5,194,249.54
  5. Step 5: Solve for x
    x = 5,194,249.54/1,914.03
  6. Step 6: Final answer
    x = 2,713.78

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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.