Finding the Fourth Proportional to 2,080.21, 3,121.86 and 984.58
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Solution
The fourth proportional to 2,080.21, 3,121.86 and 984.58 is: 1,477.59
Step by Step Solution
- Step 1: Write the proportion equation
2,080.21 : 3,121.86 = 984.58 : x - Step 2: Convert to fraction form
2,080.21/3,121.86 = 984.58/x - Step 3: Cross multiply
2,080.21x = 3,121.86 × 984.58 - Step 4: Simplify right side
2,080.21x = 3,073,709.13 - Step 5: Solve for x
x = 3,073,709.13/2,080.21 - Step 6: Final answer
x = 1,477.59
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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.