Finding the Fourth Proportional to 2,889,575.10, 3,990,294.09 and 2,163,161.70
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Solution
The fourth proportional to 2,889,575.10, 3,990,294.09 and 2,163,161.70 is: 2,987,169.76
Step by Step Solution
- Step 1: Write the proportion equation
2,889,575.10 : 3,990,294.09 = 2,163,161.70 : x - Step 2: Convert to fraction form
2,889,575.10/3,990,294.09 = 2,163,161.70/x - Step 3: Cross multiply
2,889,575.10x = 3,990,294.09 × 2,163,161.70 - Step 4: Simplify right side
2,889,575.10x = 8,631,651,347,224.35 - Step 5: Solve for x
x = 8,631,651,347,224.35/2,889,575.10 - Step 6: Final answer
x = 2,987,169.76
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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.