Finding the Fourth Proportional to 8,218.68, 11,328.44 and 6,423
Calculator
Solution
The fourth proportional to 8,218.68, 11,328.44 and 6,423 is: 8,853.32
Step by Step Solution
- Step 1: Write the proportion equation
8,218.68 : 11,328.44 = 6,423 : x - Step 2: Convert to fraction form
8,218.68/11,328.44 = 6,423/x - Step 3: Cross multiply
8,218.68x = 11,328.44 × 6,423 - Step 4: Simplify right side
8,218.68x = 72,762,570.12 - Step 5: Solve for x
x = 72,762,570.12/8,218.68 - Step 6: Final answer
x = 8,853.32
Related Problems
Find fourth proportional to 4,109.34, 5,664.22 and 3,211.50
Half scale
Find fourth proportional to 16,437.36, 22,656.88 and 12,846
Double scale
Find fourth proportional to 8,219.68, 11,329.82 and 6,424
Similar ratio
Find fourth proportional to 12,328.02, 16,992.66 and 9,634.50
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.