Home / 3.20-6.81

Finding the Third Proportional to 3.20 and 6.81

Calculator

Solution

The third proportional to 3.20 and 6.81 is: 14.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.20 : 6.81 = 6.81 : x
  2. Step 2: Convert to fraction form
    3.20/6.81 = 6.81/x
  3. Step 3: Cross multiply
    3.20x = 6.81 × 6.81
  4. Step 4: Simplify right side
    3.20x = 46.34
  5. Step 5: Solve for x
    x = 46.34/3.20
  6. Step 6: Final answer
    x = 14.47

Related Problems

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.