Finding the Third Proportional to 864 and 1,908
Calculator
Solution
The third proportional to 864 and 1,908 is: 4,213.50
Step by Step Solution
- Step 1: Write the proportion equation
864 : 1,908 = 1,908 : x - Step 2: Convert to fraction form
864/1,908 = 1,908/x - Step 3: Cross multiply
864x = 1,908 × 1,908 - Step 4: Simplify right side
864x = 3,640,464 - Step 5: Solve for x
x = 3,640,464/864 - Step 6: Final answer
x = 4,213.50
Related Problems
Find third proportional to 432 and 954
Half scale
Find third proportional to 1,728 and 3,816
Double scale
Find third proportional to 866 and 1,912
Similar ratio
Find third proportional to 1,296 and 2,862
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.