Home / 836-1,809

Finding the Third Proportional to 836 and 1,809

Calculator

Solution

The third proportional to 836 and 1,809 is: 3,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    836 : 1,809 = 1,809 : x
  2. Step 2: Convert to fraction form
    836/1,809 = 1,809/x
  3. Step 3: Cross multiply
    836x = 1,809 × 1,809
  4. Step 4: Simplify right side
    836x = 3,272,481
  5. Step 5: Solve for x
    x = 3,272,481/836
  6. Step 6: Final answer
    x = 3,914.45

Related Problems

Find third proportional to 418 and 904.50
Half scale
Find third proportional to 1,672 and 3,618
Double scale
Find third proportional to 838 and 1,813
Similar ratio
Find third proportional to 1,254 and 2,713.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.