Home / 3,260-6,720

Finding the Third Proportional to 3,260 and 6,720

Calculator

Solution

The third proportional to 3,260 and 6,720 is: 13,852.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,260 : 6,720 = 6,720 : x
  2. Step 2: Convert to fraction form
    3,260/6,720 = 6,720/x
  3. Step 3: Cross multiply
    3,260x = 6,720 × 6,720
  4. Step 4: Simplify right side
    3,260x = 45,158,400
  5. Step 5: Solve for x
    x = 45,158,400/3,260
  6. Step 6: Final answer
    x = 13,852.27

Related Problems

Find third proportional to 1,630 and 3,360
Half scale
Find third proportional to 6,520 and 13,440
Double scale
Find third proportional to 3,262 and 6,724
Similar ratio
Find third proportional to 4,890 and 10,080
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.