Finding the Fourth Proportional to 5,160,912.80, 7,122,264.87 and 2,837,995.76
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Solution
The fourth proportional to 5,160,912.80, 7,122,264.87 and 2,837,995.76 is: 3,916,546.99
Step by Step Solution
- Step 1: Write the proportion equation
5,160,912.80 : 7,122,264.87 = 2,837,995.76 : x - Step 2: Convert to fraction form
5,160,912.80/7,122,264.87 = 2,837,995.76/x - Step 3: Cross multiply
5,160,912.80x = 7,122,264.87 × 2,837,995.76 - Step 4: Simplify right side
5,160,912.80x = 20,212,957,493,126.96 - Step 5: Solve for x
x = 20,212,957,493,126.96/5,160,912.80 - Step 6: Final answer
x = 3,916,546.99
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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.