Finding the Third Proportional to 738 and 1,878
Calculator
Solution
The third proportional to 738 and 1,878 is: 4,778.98
Step by Step Solution
- Step 1: Write the proportion equation
738 : 1,878 = 1,878 : x - Step 2: Convert to fraction form
738/1,878 = 1,878/x - Step 3: Cross multiply
738x = 1,878 × 1,878 - Step 4: Simplify right side
738x = 3,526,884 - Step 5: Solve for x
x = 3,526,884/738 - Step 6: Final answer
x = 4,778.98
Related Problems
Find third proportional to 369 and 939
Half scale
Find third proportional to 1,476 and 3,756
Double scale
Find third proportional to 740 and 1,883
Similar ratio
Find third proportional to 1,107 and 2,817
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.