Home / 2,142.82-3,214.25-808.85

Finding the Fourth Proportional to 2,142.82, 3,214.25 and 808.85

Calculator

Solution

The fourth proportional to 2,142.82, 3,214.25 and 808.85 is: 1,213.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.82 : 3,214.25 = 808.85 : x
  2. Step 2: Convert to fraction form
    2,142.82/3,214.25 = 808.85/x
  3. Step 3: Cross multiply
    2,142.82x = 3,214.25 × 808.85
  4. Step 4: Simplify right side
    2,142.82x = 2,599,853.14
  5. Step 5: Solve for x
    x = 2,599,853.14/2,142.82
  6. Step 6: Final answer
    x = 1,213.29

Related Problems

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.