Home / 1,211-2,188

Finding the Third Proportional to 1,211 and 2,188

Calculator

Solution

The third proportional to 1,211 and 2,188 is: 3,953.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211 : 2,188 = 2,188 : x
  2. Step 2: Convert to fraction form
    1,211/2,188 = 2,188/x
  3. Step 3: Cross multiply
    1,211x = 2,188 × 2,188
  4. Step 4: Simplify right side
    1,211x = 4,787,344
  5. Step 5: Solve for x
    x = 4,787,344/1,211
  6. Step 6: Final answer
    x = 3,953.22

Related Problems

Find third proportional to 605.50 and 1,094
Half scale
Find third proportional to 2,422 and 4,376
Double scale
Find third proportional to 1,213 and 2,192
Similar ratio
Find third proportional to 1,816.50 and 3,282
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.