Home / 685-1,228

Finding the Third Proportional to 685 and 1,228

Calculator

Solution

The third proportional to 685 and 1,228 is: 2,201.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    685 : 1,228 = 1,228 : x
  2. Step 2: Convert to fraction form
    685/1,228 = 1,228/x
  3. Step 3: Cross multiply
    685x = 1,228 × 1,228
  4. Step 4: Simplify right side
    685x = 1,507,984
  5. Step 5: Solve for x
    x = 1,507,984/685
  6. Step 6: Final answer
    x = 2,201.44

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.