Finding the Fourth Proportional to 3,871,351.88, 5,342,602.76 and 2,129,156.02
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Solution
The fourth proportional to 3,871,351.88, 5,342,602.76 and 2,129,156.02 is: 2,938,310.75
Step by Step Solution
- Step 1: Write the proportion equation
3,871,351.88 : 5,342,602.76 = 2,129,156.02 : x - Step 2: Convert to fraction form
3,871,351.88/5,342,602.76 = 2,129,156.02/x - Step 3: Cross multiply
3,871,351.88x = 5,342,602.76 × 2,129,156.02 - Step 4: Simplify right side
3,871,351.88x = 11,375,234,828,922.62 - Step 5: Solve for x
x = 11,375,234,828,922.62/3,871,351.88 - Step 6: Final answer
x = 2,938,310.75
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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.