Home / 1,272-1,911

Finding the Third Proportional to 1,272 and 1,911

Calculator

Solution

The third proportional to 1,272 and 1,911 is: 2,871.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272 : 1,911 = 1,911 : x
  2. Step 2: Convert to fraction form
    1,272/1,911 = 1,911/x
  3. Step 3: Cross multiply
    1,272x = 1,911 × 1,911
  4. Step 4: Simplify right side
    1,272x = 3,651,921
  5. Step 5: Solve for x
    x = 3,651,921/1,272
  6. Step 6: Final answer
    x = 2,871.01

Related Problems

Find third proportional to 636 and 955.50
Half scale
Find third proportional to 2,544 and 3,822
Double scale
Find third proportional to 1,274 and 1,914
Similar ratio
Find third proportional to 1,908 and 2,866.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.