Finding the Third Proportional to 871.50 and 1,309.50
Calculator
Solution
The third proportional to 871.50 and 1,309.50 is: 1,967.63
Step by Step Solution
- Step 1: Write the proportion equation
871.50 : 1,309.50 = 1,309.50 : x - Step 2: Convert to fraction form
871.50/1,309.50 = 1,309.50/x - Step 3: Cross multiply
871.50x = 1,309.50 × 1,309.50 - Step 4: Simplify right side
871.50x = 1,714,790.25 - Step 5: Solve for x
x = 1,714,790.25/871.50 - Step 6: Final answer
x = 1,967.63
Related Problems
Find third proportional to 435.75 and 654.75
Half scale
Find third proportional to 1,743 and 2,619
Double scale
Find third proportional to 874 and 1,313
Similar ratio
Find third proportional to 1,307.25 and 1,964.25
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.