Home / 1,329-1,911

Finding the Third Proportional to 1,329 and 1,911

Calculator

Solution

The third proportional to 1,329 and 1,911 is: 2,747.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329 : 1,911 = 1,911 : x
  2. Step 2: Convert to fraction form
    1,329/1,911 = 1,911/x
  3. Step 3: Cross multiply
    1,329x = 1,911 × 1,911
  4. Step 4: Simplify right side
    1,329x = 3,651,921
  5. Step 5: Solve for x
    x = 3,651,921/1,329
  6. Step 6: Final answer
    x = 2,747.87

Related Problems

Find third proportional to 664.50 and 955.50
Half scale
Find third proportional to 2,658 and 3,822
Double scale
Find third proportional to 1,331 and 1,914
Similar ratio
Find third proportional to 1,993.50 and 2,866.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.