Finding the Third Proportional to 857 and 1,600
Calculator
Solution
The third proportional to 857 and 1,600 is: 2,987.16
Step by Step Solution
- Step 1: Write the proportion equation
857 : 1,600 = 1,600 : x - Step 2: Convert to fraction form
857/1,600 = 1,600/x - Step 3: Cross multiply
857x = 1,600 × 1,600 - Step 4: Simplify right side
857x = 2,560,000 - Step 5: Solve for x
x = 2,560,000/857 - Step 6: Final answer
x = 2,987.16
Related Problems
Find third proportional to 428.50 and 800
Half scale
Find third proportional to 1,714 and 3,200
Double scale
Find third proportional to 859 and 1,604
Similar ratio
Find third proportional to 1,285.50 and 2,400
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.