Finding the Fourth Proportional to 3,763,638.47, 5,192,676.84 and 2,131,786.55
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Solution
The fourth proportional to 3,763,638.47, 5,192,676.84 and 2,131,786.55 is: 2,941,217.31
Step by Step Solution
- Step 1: Write the proportion equation
3,763,638.47 : 5,192,676.84 = 2,131,786.55 : x - Step 2: Convert to fraction form
3,763,638.47/5,192,676.84 = 2,131,786.55/x - Step 3: Cross multiply
3,763,638.47x = 5,192,676.84 × 2,131,786.55 - Step 4: Simplify right side
3,763,638.47x = 11,069,678,620,045.12 - Step 5: Solve for x
x = 11,069,678,620,045.12/3,763,638.47 - Step 6: Final answer
x = 2,941,217.31
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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.