Home / 1,921-3,976

Finding the Third Proportional to 1,921 and 3,976

Calculator

Solution

The third proportional to 1,921 and 3,976 is: 8,229.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921 : 3,976 = 3,976 : x
  2. Step 2: Convert to fraction form
    1,921/3,976 = 3,976/x
  3. Step 3: Cross multiply
    1,921x = 3,976 × 3,976
  4. Step 4: Simplify right side
    1,921x = 15,808,576
  5. Step 5: Solve for x
    x = 15,808,576/1,921
  6. Step 6: Final answer
    x = 8,229.35

Related Problems

Find third proportional to 960.50 and 1,988
Half scale
Find third proportional to 3,842 and 7,952
Double scale
Find third proportional to 1,923 and 3,980
Similar ratio
Find third proportional to 2,881.50 and 5,964
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.