Finding the Third Proportional to 1,100 and 2,860
Calculator
Solution
The third proportional to 1,100 and 2,860 is: 7,436
Step by Step Solution
- Step 1: Write the proportion equation
1,100 : 2,860 = 2,860 : x - Step 2: Convert to fraction form
1,100/2,860 = 2,860/x - Step 3: Cross multiply
1,100x = 2,860 × 2,860 - Step 4: Simplify right side
1,100x = 8,179,600 - Step 5: Solve for x
x = 8,179,600/1,100 - Step 6: Final answer
x = 7,436
Related Problems
Find third proportional to 550 and 1,430
Half scale
Find third proportional to 2,200 and 5,720
Double scale
Find third proportional to 1,102 and 2,865
Similar ratio
Find third proportional to 1,650 and 4,290
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.