Finding the Fourth Proportional to 3,887,128.62, 5,364,351.09 and 2,168,211.96
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Solution
The fourth proportional to 3,887,128.62, 5,364,351.09 and 2,168,211.96 is: 2,992,195.87
Step by Step Solution
- Step 1: Write the proportion equation
3,887,128.62 : 5,364,351.09 = 2,168,211.96 : x - Step 2: Convert to fraction form
3,887,128.62/5,364,351.09 = 2,168,211.96/x - Step 3: Cross multiply
3,887,128.62x = 5,364,351.09 × 2,168,211.96 - Step 4: Simplify right side
3,887,128.62x = 11,631,050,190,977.04 - Step 5: Solve for x
x = 11,631,050,190,977.04/3,887,128.62 - Step 6: Final answer
x = 2,992,195.87
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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.