Home / 6-11.25

Finding the Third Proportional to 6 and 11.25

Calculator

Solution

The third proportional to 6 and 11.25 is: 21.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6 : 11.25 = 11.25 : x
  2. Step 2: Convert to fraction form
    6/11.25 = 11.25/x
  3. Step 3: Cross multiply
    6x = 11.25 × 11.25
  4. Step 4: Simplify right side
    6x = 126.56
  5. Step 5: Solve for x
    x = 126.56/6
  6. Step 6: Final answer
    x = 21.09

Related Problems

Find third proportional to 3 and 5.63
Half scale
Find third proportional to 12 and 22.50
Double scale
Find third proportional to 8 and 15
Similar ratio
Find third proportional to 9 and 16.88
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.