Finding the Fourth Proportional to 3,940,791.94, 5,438,302.17 and 2,129,955.94
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Solution
The fourth proportional to 3,940,791.94, 5,438,302.17 and 2,129,955.94 is: 2,939,344.22
Step by Step Solution
- Step 1: Write the proportion equation
3,940,791.94 : 5,438,302.17 = 2,129,955.94 : x - Step 2: Convert to fraction form
3,940,791.94/5,438,302.17 = 2,129,955.94/x - Step 3: Cross multiply
3,940,791.94x = 5,438,302.17 × 2,129,955.94 - Step 4: Simplify right side
3,940,791.94x = 11,583,344,010,506.39 - Step 5: Solve for x
x = 11,583,344,010,506.39/3,940,791.94 - Step 6: Final answer
x = 2,939,344.22
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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.