Finding the Fourth Proportional to 5,131,865.88, 7,082,197.20 and 2,840,027.31
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Solution
The fourth proportional to 5,131,865.88, 7,082,197.20 and 2,840,027.31 is: 3,919,360.70
Step by Step Solution
- Step 1: Write the proportion equation
5,131,865.88 : 7,082,197.20 = 2,840,027.31 : x - Step 2: Convert to fraction form
5,131,865.88/7,082,197.20 = 2,840,027.31/x - Step 3: Cross multiply
5,131,865.88x = 7,082,197.20 × 2,840,027.31 - Step 4: Simplify right side
5,131,865.88x = 20,113,633,462,805.53 - Step 5: Solve for x
x = 20,113,633,462,805.53/5,131,865.88 - Step 6: Final answer
x = 3,919,360.70
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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.