Finding the Fourth Proportional to 3,432, 5,148 and 1,380
Calculator
Solution
The fourth proportional to 3,432, 5,148 and 1,380 is: 2,070
Step by Step Solution
- Step 1: Write the proportion equation
3,432 : 5,148 = 1,380 : x - Step 2: Convert to fraction form
3,432/5,148 = 1,380/x - Step 3: Cross multiply
3,432x = 5,148 × 1,380 - Step 4: Simplify right side
3,432x = 7,104,240 - Step 5: Solve for x
x = 7,104,240/3,432 - Step 6: Final answer
x = 2,070
Related Problems
Find fourth proportional to 1,716, 2,574 and 690
Half scale
Find fourth proportional to 6,864, 10,296 and 2,760
Double scale
Find fourth proportional to 3,433, 5,149.50 and 1,381
Similar ratio
Find fourth proportional to 5,148, 7,722 and 2,070
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.