Home / 928-1,980

Finding the Third Proportional to 928 and 1,980

Calculator

Solution

The third proportional to 928 and 1,980 is: 4,224.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    928 : 1,980 = 1,980 : x
  2. Step 2: Convert to fraction form
    928/1,980 = 1,980/x
  3. Step 3: Cross multiply
    928x = 1,980 × 1,980
  4. Step 4: Simplify right side
    928x = 3,920,400
  5. Step 5: Solve for x
    x = 3,920,400/928
  6. Step 6: Final answer
    x = 4,224.57

Related Problems

Find third proportional to 464 and 990
Half scale
Find third proportional to 1,856 and 3,960
Double scale
Find third proportional to 930 and 1,984
Similar ratio
Find third proportional to 1,392 and 2,970
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.