Home / 867-1,905

Finding the Third Proportional to 867 and 1,905

Calculator

Solution

The third proportional to 867 and 1,905 is: 4,185.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    867 : 1,905 = 1,905 : x
  2. Step 2: Convert to fraction form
    867/1,905 = 1,905/x
  3. Step 3: Cross multiply
    867x = 1,905 × 1,905
  4. Step 4: Simplify right side
    867x = 3,629,025
  5. Step 5: Solve for x
    x = 3,629,025/867
  6. Step 6: Final answer
    x = 4,185.73

Related Problems

Find third proportional to 433.50 and 952.50
Half scale
Find third proportional to 1,734 and 3,810
Double scale
Find third proportional to 869 and 1,909
Similar ratio
Find third proportional to 1,300.50 and 2,857.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.