Home / 675-1,338

Finding the Third Proportional to 675 and 1,338

Calculator

Solution

The third proportional to 675 and 1,338 is: 2,652.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    675 : 1,338 = 1,338 : x
  2. Step 2: Convert to fraction form
    675/1,338 = 1,338/x
  3. Step 3: Cross multiply
    675x = 1,338 × 1,338
  4. Step 4: Simplify right side
    675x = 1,790,244
  5. Step 5: Solve for x
    x = 1,790,244/675
  6. Step 6: Final answer
    x = 2,652.21

Related Problems

Find third proportional to 337.50 and 669
Half scale
Find third proportional to 1,350 and 2,676
Double scale
Find third proportional to 677 and 1,342
Similar ratio
Find third proportional to 1,012.50 and 2,007
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.