Home / 808-2,120

Finding the Third Proportional to 808 and 2,120

Calculator

Solution

The third proportional to 808 and 2,120 is: 5,562.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    808 : 2,120 = 2,120 : x
  2. Step 2: Convert to fraction form
    808/2,120 = 2,120/x
  3. Step 3: Cross multiply
    808x = 2,120 × 2,120
  4. Step 4: Simplify right side
    808x = 4,494,400
  5. Step 5: Solve for x
    x = 4,494,400/808
  6. Step 6: Final answer
    x = 5,562.38

Related Problems

Find third proportional to 404 and 1,060
Half scale
Find third proportional to 1,616 and 4,240
Double scale
Find third proportional to 810 and 2,125
Similar ratio
Find third proportional to 1,212 and 3,180
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.