Finding the Fourth Proportional to 7,691,857.80, 11,537,786.70 and 3,912,721.80
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Solution
The fourth proportional to 7,691,857.80, 11,537,786.70 and 3,912,721.80 is: 5,869,082.70
Step by Step Solution
- Step 1: Write the proportion equation
7,691,857.80 : 11,537,786.70 = 3,912,721.80 : x - Step 2: Convert to fraction form
7,691,857.80/11,537,786.70 = 3,912,721.80/x - Step 3: Cross multiply
7,691,857.80x = 11,537,786.70 × 3,912,721.80 - Step 4: Simplify right side
7,691,857.80x = 45,144,149,544,840.05 - Step 5: Solve for x
x = 45,144,149,544,840.05/7,691,857.80 - Step 6: Final answer
x = 5,869,082.70
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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.