Home / 3,992-8,480

Finding the Third Proportional to 3,992 and 8,480

Calculator

Solution

The third proportional to 3,992 and 8,480 is: 18,013.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992 : 8,480 = 8,480 : x
  2. Step 2: Convert to fraction form
    3,992/8,480 = 8,480/x
  3. Step 3: Cross multiply
    3,992x = 8,480 × 8,480
  4. Step 4: Simplify right side
    3,992x = 71,910,400
  5. Step 5: Solve for x
    x = 71,910,400/3,992
  6. Step 6: Final answer
    x = 18,013.63

Related Problems

Find third proportional to 1,996 and 4,240
Half scale
Find third proportional to 7,984 and 16,960
Double scale
Find third proportional to 3,994 and 8,484
Similar ratio
Find third proportional to 5,988 and 12,720
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.