Finding the Fourth Proportional to 3,872,318.94, 5,343,390.87 and 2,153,161.98
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Solution
The fourth proportional to 3,872,318.94, 5,343,390.87 and 2,153,161.98 is: 2,971,135.96
Step by Step Solution
- Step 1: Write the proportion equation
3,872,318.94 : 5,343,390.87 = 2,153,161.98 : x - Step 2: Convert to fraction form
3,872,318.94/5,343,390.87 = 2,153,161.98/x - Step 3: Cross multiply
3,872,318.94x = 5,343,390.87 × 2,153,161.98 - Step 4: Simplify right side
3,872,318.94x = 11,505,186,065,563.12 - Step 5: Solve for x
x = 11,505,186,065,563.12/3,872,318.94 - Step 6: Final answer
x = 2,971,135.96
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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.