Home / 1,330-2,660

Finding the Third Proportional to 1,330 and 2,660

Calculator

Solution

The third proportional to 1,330 and 2,660 is: 5,320

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330 : 2,660 = 2,660 : x
  2. Step 2: Convert to fraction form
    1,330/2,660 = 2,660/x
  3. Step 3: Cross multiply
    1,330x = 2,660 × 2,660
  4. Step 4: Simplify right side
    1,330x = 7,075,600
  5. Step 5: Solve for x
    x = 7,075,600/1,330
  6. Step 6: Final answer
    x = 5,320

Related Problems

Find third proportional to 665 and 1,330
Half scale
Find third proportional to 2,660 and 5,320
Double scale
Find third proportional to 1,332 and 2,664
Similar ratio
Find third proportional to 1,995 and 3,990
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.