Home / 809-938

Finding the Third Proportional to 809 and 938

Calculator

Solution

The third proportional to 809 and 938 is: 1,087.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    809 : 938 = 938 : x
  2. Step 2: Convert to fraction form
    809/938 = 938/x
  3. Step 3: Cross multiply
    809x = 938 × 938
  4. Step 4: Simplify right side
    809x = 879,844
  5. Step 5: Solve for x
    x = 879,844/809
  6. Step 6: Final answer
    x = 1,087.57

Related Problems

Find third proportional to 404.50 and 469
Half scale
Find third proportional to 1,618 and 1,876
Double scale
Find third proportional to 811 and 940
Similar ratio
Find third proportional to 1,213.50 and 1,407
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.