Finding the Fourth Proportional to 6.38, 9.56 and 4
Calculator
Solution
The fourth proportional to 6.38, 9.56 and 4 is: 5.99
Step by Step Solution
- Step 1: Write the proportion equation
6.38 : 9.56 = 4 : x - Step 2: Convert to fraction form
6.38/9.56 = 4/x - Step 3: Cross multiply
6.38x = 9.56 × 4 - Step 4: Simplify right side
6.38x = 38.24 - Step 5: Solve for x
x = 38.24/6.38 - Step 6: Final answer
x = 5.99
Related Problems
Find fourth proportional to 3.19, 4.78 and 2
Half scale
Find fourth proportional to 12.76, 19.12 and 8
Double scale
Find fourth proportional to 7.38, 11.06 and 5
Similar ratio
Find fourth proportional to 9.57, 14.34 and 6
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.