Finding the Third Proportional to 909 and 1,644
Calculator
Solution
The third proportional to 909 and 1,644 is: 2,973.31
Step by Step Solution
- Step 1: Write the proportion equation
909 : 1,644 = 1,644 : x - Step 2: Convert to fraction form
909/1,644 = 1,644/x - Step 3: Cross multiply
909x = 1,644 × 1,644 - Step 4: Simplify right side
909x = 2,702,736 - Step 5: Solve for x
x = 2,702,736/909 - Step 6: Final answer
x = 2,973.31
Related Problems
Find third proportional to 454.50 and 822
Half scale
Find third proportional to 1,818 and 3,288
Double scale
Find third proportional to 911 and 1,648
Similar ratio
Find third proportional to 1,363.50 and 2,466
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.