Home / 880-1,320

Finding the Third Proportional to 880 and 1,320

Calculator

Solution

The third proportional to 880 and 1,320 is: 1,980

Step by Step Solution

  1. Step 1: Write the proportion equation
    880 : 1,320 = 1,320 : x
  2. Step 2: Convert to fraction form
    880/1,320 = 1,320/x
  3. Step 3: Cross multiply
    880x = 1,320 × 1,320
  4. Step 4: Simplify right side
    880x = 1,742,400
  5. Step 5: Solve for x
    x = 1,742,400/880
  6. Step 6: Final answer
    x = 1,980

Related Problems

Find third proportional to 440 and 660
Half scale
Find third proportional to 1,760 and 2,640
Double scale
Find third proportional to 882 and 1,323
Similar ratio
Find third proportional to 1,320 and 1,980
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.