Home / 3,860-8,072

Finding the Third Proportional to 3,860 and 8,072

Calculator

Solution

The third proportional to 3,860 and 8,072 is: 16,880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860 : 8,072 = 8,072 : x
  2. Step 2: Convert to fraction form
    3,860/8,072 = 8,072/x
  3. Step 3: Cross multiply
    3,860x = 8,072 × 8,072
  4. Step 4: Simplify right side
    3,860x = 65,157,184
  5. Step 5: Solve for x
    x = 65,157,184/3,860
  6. Step 6: Final answer
    x = 16,880.10

Related Problems

Find third proportional to 1,930 and 4,036
Half scale
Find third proportional to 7,720 and 16,144
Double scale
Find third proportional to 3,862 and 8,076
Similar ratio
Find third proportional to 5,790 and 12,108
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.