Finding the Fourth Proportional to 3,985,115.40, 5,979,422.70 and 2,091,413.94
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Solution
The fourth proportional to 3,985,115.40, 5,979,422.70 and 2,091,413.94 is: 3,138,039.11
Step by Step Solution
- Step 1: Write the proportion equation
3,985,115.40 : 5,979,422.70 = 2,091,413.94 : x - Step 2: Convert to fraction form
3,985,115.40/5,979,422.70 = 2,091,413.94/x - Step 3: Cross multiply
3,985,115.40x = 5,979,422.70 × 2,091,413.94 - Step 4: Simplify right side
3,985,115.40x = 12,505,447,987,932.44 - Step 5: Solve for x
x = 12,505,447,987,932.44/3,985,115.40 - Step 6: Final answer
x = 3,138,039.11
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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.