Finding the Fourth Proportional to 1,774, 2,448 and 988.09
Calculator
Solution
The fourth proportional to 1,774, 2,448 and 988.09 is: 1,363.50
Step by Step Solution
- Step 1: Write the proportion equation
1,774 : 2,448 = 988.09 : x - Step 2: Convert to fraction form
1,774/2,448 = 988.09/x - Step 3: Cross multiply
1,774x = 2,448 × 988.09 - Step 4: Simplify right side
1,774x = 2,418,844.32 - Step 5: Solve for x
x = 2,418,844.32/1,774 - Step 6: Final answer
x = 1,363.50
Related Problems
Find fourth proportional to 887, 1,224 and 494.05
Half scale
Find fourth proportional to 3,548, 4,896 and 1,976.18
Double scale
Find fourth proportional to 1,775, 2,449.38 and 989.09
Similar ratio
Find fourth proportional to 2,661, 3,672 and 1,482.14
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.