Finding the Fourth Proportional to 3,848,638.86, 5,310,990.99 and 2,129,831.82
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Solution
The fourth proportional to 3,848,638.86, 5,310,990.99 and 2,129,831.82 is: 2,939,095.62
Step by Step Solution
- Step 1: Write the proportion equation
3,848,638.86 : 5,310,990.99 = 2,129,831.82 : x - Step 2: Convert to fraction form
3,848,638.86/5,310,990.99 = 2,129,831.82/x - Step 3: Cross multiply
3,848,638.86x = 5,310,990.99 × 2,129,831.82 - Step 4: Simplify right side
3,848,638.86x = 11,311,517,606,235.30 - Step 5: Solve for x
x = 11,311,517,606,235.30/3,848,638.86 - Step 6: Final answer
x = 2,939,095.62
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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.