Home / 1,338-2,740

Finding the Third Proportional to 1,338 and 2,740

Calculator

Solution

The third proportional to 1,338 and 2,740 is: 5,611.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338 : 2,740 = 2,740 : x
  2. Step 2: Convert to fraction form
    1,338/2,740 = 2,740/x
  3. Step 3: Cross multiply
    1,338x = 2,740 × 2,740
  4. Step 4: Simplify right side
    1,338x = 7,507,600
  5. Step 5: Solve for x
    x = 7,507,600/1,338
  6. Step 6: Final answer
    x = 5,611.06

Related Problems

Find third proportional to 669 and 1,370
Half scale
Find third proportional to 2,676 and 5,480
Double scale
Find third proportional to 1,340 and 2,744
Similar ratio
Find third proportional to 2,007 and 4,110
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.