Home / 905-1,039

Finding the Third Proportional to 905 and 1,039

Calculator

Solution

The third proportional to 905 and 1,039 is: 1,192.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    905 : 1,039 = 1,039 : x
  2. Step 2: Convert to fraction form
    905/1,039 = 1,039/x
  3. Step 3: Cross multiply
    905x = 1,039 × 1,039
  4. Step 4: Simplify right side
    905x = 1,079,521
  5. Step 5: Solve for x
    x = 1,079,521/905
  6. Step 6: Final answer
    x = 1,192.84

Related Problems

Find third proportional to 452.50 and 519.50
Half scale
Find third proportional to 1,810 and 2,078
Double scale
Find third proportional to 907 and 1,041
Similar ratio
Find third proportional to 1,357.50 and 1,558.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.