Finding the Fourth Proportional to 3,915,661.23, 5,879,257.53 and 2,189,912.21
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Solution
The fourth proportional to 3,915,661.23, 5,879,257.53 and 2,189,912.21 is: 3,288,092.88
Step by Step Solution
- Step 1: Write the proportion equation
3,915,661.23 : 5,879,257.53 = 2,189,912.21 : x - Step 2: Convert to fraction form
3,915,661.23/5,879,257.53 = 2,189,912.21/x - Step 3: Cross multiply
3,915,661.23x = 5,879,257.53 × 2,189,912.21 - Step 4: Simplify right side
3,915,661.23x = 12,875,057,821,285.15 - Step 5: Solve for x
x = 12,875,057,821,285.15/3,915,661.23 - Step 6: Final answer
x = 3,288,092.88
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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.