Home / 8,378-11,378

Finding the Third Proportional to 8,378 and 11,378

Calculator

Solution

The third proportional to 8,378 and 11,378 is: 15,452.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378 : 11,378 = 11,378 : x
  2. Step 2: Convert to fraction form
    8,378/11,378 = 11,378/x
  3. Step 3: Cross multiply
    8,378x = 11,378 × 11,378
  4. Step 4: Simplify right side
    8,378x = 129,458,884
  5. Step 5: Solve for x
    x = 129,458,884/8,378
  6. Step 6: Final answer
    x = 15,452.24

Related Problems

Find third proportional to 4,189 and 5,689
Half scale
Find third proportional to 16,756 and 22,756
Double scale
Find third proportional to 8,380 and 11,381
Similar ratio
Find third proportional to 12,567 and 17,067
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.