Finding the Fourth Proportional to 3,940,749.09, 5,438,230.92 and 2,129,913.09
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Solution
The fourth proportional to 3,940,749.09, 5,438,230.92 and 2,129,913.09 is: 2,939,278.54
Step by Step Solution
- Step 1: Write the proportion equation
3,940,749.09 : 5,438,230.92 = 2,129,913.09 : x - Step 2: Convert to fraction form
3,940,749.09/5,438,230.92 = 2,129,913.09/x - Step 3: Cross multiply
3,940,749.09x = 5,438,230.92 × 2,129,913.09 - Step 4: Simplify right side
3,940,749.09x = 11,582,959,222,950.74 - Step 5: Solve for x
x = 11,582,959,222,950.74/3,940,749.09 - Step 6: Final answer
x = 2,939,278.54
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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.