Finding the Fourth Proportional to 3,940,750.09, 5,438,232.30 and 2,129,914.09
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Solution
The fourth proportional to 3,940,750.09, 5,438,232.30 and 2,129,914.09 is: 2,939,279.92
Step by Step Solution
- Step 1: Write the proportion equation
3,940,750.09 : 5,438,232.30 = 2,129,914.09 : x - Step 2: Convert to fraction form
3,940,750.09/5,438,232.30 = 2,129,914.09/x - Step 3: Cross multiply
3,940,750.09x = 5,438,232.30 × 2,129,914.09 - Step 4: Simplify right side
3,940,750.09x = 11,582,967,600,463.11 - Step 5: Solve for x
x = 11,582,967,600,463.11/3,940,750.09 - Step 6: Final answer
x = 2,939,279.92
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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.