Home / 955-1,980

Finding the Third Proportional to 955 and 1,980

Calculator

Solution

The third proportional to 955 and 1,980 is: 4,105.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    955 : 1,980 = 1,980 : x
  2. Step 2: Convert to fraction form
    955/1,980 = 1,980/x
  3. Step 3: Cross multiply
    955x = 1,980 × 1,980
  4. Step 4: Simplify right side
    955x = 3,920,400
  5. Step 5: Solve for x
    x = 3,920,400/955
  6. Step 6: Final answer
    x = 4,105.13

Related Problems

Find third proportional to 477.50 and 990
Half scale
Find third proportional to 1,910 and 3,960
Double scale
Find third proportional to 957 and 1,984
Similar ratio
Find third proportional to 1,432.50 and 2,970
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.