Home / 1,129-2,228

Finding the Third Proportional to 1,129 and 2,228

Calculator

Solution

The third proportional to 1,129 and 2,228 is: 4,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129 : 2,228 = 2,228 : x
  2. Step 2: Convert to fraction form
    1,129/2,228 = 2,228/x
  3. Step 3: Cross multiply
    1,129x = 2,228 × 2,228
  4. Step 4: Simplify right side
    1,129x = 4,963,984
  5. Step 5: Solve for x
    x = 4,963,984/1,129
  6. Step 6: Final answer
    x = 4,396.80

Related Problems

Find third proportional to 564.50 and 1,114
Half scale
Find third proportional to 2,258 and 4,456
Double scale
Find third proportional to 1,131 and 2,232
Similar ratio
Find third proportional to 1,693.50 and 3,342
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.