Home / 3,938-8,485

Finding the Third Proportional to 3,938 and 8,485

Calculator

Solution

The third proportional to 3,938 and 8,485 is: 18,282.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938 : 8,485 = 8,485 : x
  2. Step 2: Convert to fraction form
    3,938/8,485 = 8,485/x
  3. Step 3: Cross multiply
    3,938x = 8,485 × 8,485
  4. Step 4: Simplify right side
    3,938x = 71,995,225
  5. Step 5: Solve for x
    x = 71,995,225/3,938
  6. Step 6: Final answer
    x = 18,282.18

Related Problems

Find third proportional to 1,969 and 4,242.50
Half scale
Find third proportional to 7,876 and 16,970
Double scale
Find third proportional to 3,940 and 8,489
Similar ratio
Find third proportional to 5,907 and 12,727.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.