Finding the Fourth Proportional to 3,871,831.44, 5,343,257.88 and 2,129,635.57
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Solution
The fourth proportional to 3,871,831.44, 5,343,257.88 and 2,129,635.57 is: 2,938,968.86
Step by Step Solution
- Step 1: Write the proportion equation
3,871,831.44 : 5,343,257.88 = 2,129,635.57 : x - Step 2: Convert to fraction form
3,871,831.44/5,343,257.88 = 2,129,635.57/x - Step 3: Cross multiply
3,871,831.44x = 5,343,257.88 × 2,129,635.57 - Step 4: Simplify right side
3,871,831.44x = 11,379,192,040,930.79 - Step 5: Solve for x
x = 11,379,192,040,930.79/3,871,831.44 - Step 6: Final answer
x = 2,938,968.86
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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.