Finding the Fourth Proportional to 3,871,364.91, 5,342,620.73 and 2,129,168.97
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Solution
The fourth proportional to 3,871,364.91, 5,342,620.73 and 2,129,168.97 is: 2,938,328.61
Step by Step Solution
- Step 1: Write the proportion equation
3,871,364.91 : 5,342,620.73 = 2,129,168.97 : x - Step 2: Convert to fraction form
3,871,364.91/5,342,620.73 = 2,129,168.97/x - Step 3: Cross multiply
3,871,364.91x = 5,342,620.73 × 2,129,168.97 - Step 4: Simplify right side
3,871,364.91x = 11,375,342,266,148.90 - Step 5: Solve for x
x = 11,375,342,266,148.90/3,871,364.91 - Step 6: Final answer
x = 2,938,328.61
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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.