Finding the Fourth Proportional to 3,848,900.79, 5,311,649.81 and 2,130,021.87
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Solution
The fourth proportional to 3,848,900.79, 5,311,649.81 and 2,130,021.87 is: 2,939,522.45
Step by Step Solution
- Step 1: Write the proportion equation
3,848,900.79 : 5,311,649.81 = 2,130,021.87 : x - Step 2: Convert to fraction form
3,848,900.79/5,311,649.81 = 2,130,021.87/x - Step 3: Cross multiply
3,848,900.79x = 5,311,649.81 × 2,130,021.87 - Step 4: Simplify right side
3,848,900.79x = 11,313,930,261,081.34 - Step 5: Solve for x
x = 11,313,930,261,081.34/3,848,900.79 - Step 6: Final answer
x = 2,939,522.45
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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.