Home / 911-1,055

Finding the Third Proportional to 911 and 1,055

Calculator

Solution

The third proportional to 911 and 1,055 is: 1,221.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    911 : 1,055 = 1,055 : x
  2. Step 2: Convert to fraction form
    911/1,055 = 1,055/x
  3. Step 3: Cross multiply
    911x = 1,055 × 1,055
  4. Step 4: Simplify right side
    911x = 1,113,025
  5. Step 5: Solve for x
    x = 1,113,025/911
  6. Step 6: Final answer
    x = 1,221.76

Related Problems

Find third proportional to 455.50 and 527.50
Half scale
Find third proportional to 1,822 and 2,110
Double scale
Find third proportional to 913 and 1,057
Similar ratio
Find third proportional to 1,366.50 and 1,582.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.