Home / 622-1,279

Finding the Third Proportional to 622 and 1,279

Calculator

Solution

The third proportional to 622 and 1,279 is: 2,629.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    622 : 1,279 = 1,279 : x
  2. Step 2: Convert to fraction form
    622/1,279 = 1,279/x
  3. Step 3: Cross multiply
    622x = 1,279 × 1,279
  4. Step 4: Simplify right side
    622x = 1,635,841
  5. Step 5: Solve for x
    x = 1,635,841/622
  6. Step 6: Final answer
    x = 2,629.97

Related Problems

Find third proportional to 311 and 639.50
Half scale
Find third proportional to 1,244 and 2,558
Double scale
Find third proportional to 624 and 1,283
Similar ratio
Find third proportional to 933 and 1,918.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.