Home / 394-812

Finding the Third Proportional to 394 and 812

Calculator

Solution

The third proportional to 394 and 812 is: 1,673.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    394 : 812 = 812 : x
  2. Step 2: Convert to fraction form
    394/812 = 812/x
  3. Step 3: Cross multiply
    394x = 812 × 812
  4. Step 4: Simplify right side
    394x = 659,344
  5. Step 5: Solve for x
    x = 659,344/394
  6. Step 6: Final answer
    x = 1,673.46

Related Problems

Find third proportional to 197 and 406
Half scale
Find third proportional to 788 and 1,624
Double scale
Find third proportional to 396 and 816
Similar ratio
Find third proportional to 591 and 1,218
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.