Finding the Fourth Proportional to 2,321.57, 3,481.34 and 1,087.99
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Solution
The fourth proportional to 2,321.57, 3,481.34 and 1,087.99 is: 1,631.50
Step by Step Solution
- Step 1: Write the proportion equation
2,321.57 : 3,481.34 = 1,087.99 : x - Step 2: Convert to fraction form
2,321.57/3,481.34 = 1,087.99/x - Step 3: Cross multiply
2,321.57x = 3,481.34 × 1,087.99 - Step 4: Simplify right side
2,321.57x = 3,787,648.96 - Step 5: Solve for x
x = 3,787,648.96/2,321.57 - Step 6: Final answer
x = 1,631.50
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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.