Home / 811-979

Finding the Third Proportional to 811 and 979

Calculator

Solution

The third proportional to 811 and 979 is: 1,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    811 : 979 = 979 : x
  2. Step 2: Convert to fraction form
    811/979 = 979/x
  3. Step 3: Cross multiply
    811x = 979 × 979
  4. Step 4: Simplify right side
    811x = 958,441
  5. Step 5: Solve for x
    x = 958,441/811
  6. Step 6: Final answer
    x = 1,181.80

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.