Home / 2.25-4

Finding the Third Proportional to 2.25 and 4

Calculator

Solution

The third proportional to 2.25 and 4 is: 7.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.25 : 4 = 4 : x
  2. Step 2: Convert to fraction form
    2.25/4 = 4/x
  3. Step 3: Cross multiply
    2.25x = 4 × 4
  4. Step 4: Simplify right side
    2.25x = 16
  5. Step 5: Solve for x
    x = 16/2.25
  6. Step 6: Final answer
    x = 7.11

Related Problems

Find third proportional to 1.13 and 2
Half scale
Find third proportional to 4.50 and 8
Double scale
Find third proportional to 4 and 8
Similar ratio
Find third proportional to 3.38 and 6
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.