Home / 1,940-3,880

Finding the Third Proportional to 1,940 and 3,880

Calculator

Solution

The third proportional to 1,940 and 3,880 is: 7,760

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940 : 3,880 = 3,880 : x
  2. Step 2: Convert to fraction form
    1,940/3,880 = 3,880/x
  3. Step 3: Cross multiply
    1,940x = 3,880 × 3,880
  4. Step 4: Simplify right side
    1,940x = 15,054,400
  5. Step 5: Solve for x
    x = 15,054,400/1,940
  6. Step 6: Final answer
    x = 7,760

Related Problems

Find third proportional to 970 and 1,940
Half scale
Find third proportional to 3,880 and 7,760
Double scale
Find third proportional to 1,942 and 3,884
Similar ratio
Find third proportional to 2,910 and 5,820
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.