Home / 1,620-3,422

Finding the Third Proportional to 1,620 and 3,422

Calculator

Solution

The third proportional to 1,620 and 3,422 is: 7,228.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620 : 3,422 = 3,422 : x
  2. Step 2: Convert to fraction form
    1,620/3,422 = 3,422/x
  3. Step 3: Cross multiply
    1,620x = 3,422 × 3,422
  4. Step 4: Simplify right side
    1,620x = 11,710,084
  5. Step 5: Solve for x
    x = 11,710,084/1,620
  6. Step 6: Final answer
    x = 7,228.45

Related Problems

Find third proportional to 810 and 1,711
Half scale
Find third proportional to 3,240 and 6,844
Double scale
Find third proportional to 1,622 and 3,426
Similar ratio
Find third proportional to 2,430 and 5,133
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.