Home / 2-2.75

Finding the Third Proportional to 2 and 2.75

Calculator

Solution

The third proportional to 2 and 2.75 is: 3.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2 : 2.75 = 2.75 : x
  2. Step 2: Convert to fraction form
    2/2.75 = 2.75/x
  3. Step 3: Cross multiply
    2x = 2.75 × 2.75
  4. Step 4: Simplify right side
    2x = 7.56
  5. Step 5: Solve for x
    x = 7.56/2
  6. Step 6: Final answer
    x = 3.78

Related Problems

Find third proportional to 1 and 1.38
Half scale
Find third proportional to 4 and 5.50
Double scale
Find third proportional to 4 and 6
Similar ratio
Find third proportional to 3 and 4.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.