Finding the Fourth Proportional to 2,889,590.22, 3,990,314.96 and 2,163,176.82
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Solution
The fourth proportional to 2,889,590.22, 3,990,314.96 and 2,163,176.82 is: 2,987,190.63
Step by Step Solution
- Step 1: Write the proportion equation
2,889,590.22 : 3,990,314.96 = 2,163,176.82 : x - Step 2: Convert to fraction form
2,889,590.22/3,990,314.96 = 2,163,176.82/x - Step 3: Cross multiply
2,889,590.22x = 3,990,314.96 × 2,163,176.82 - Step 4: Simplify right side
2,889,590.22x = 8,631,756,825,971.23 - Step 5: Solve for x
x = 8,631,756,825,971.23/2,889,590.22 - Step 6: Final answer
x = 2,987,190.63
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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.