Finding the Fourth Proportional to 3,872,795.09, 5,344,646.49 and 2,153,878.70
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Solution
The fourth proportional to 3,872,795.09, 5,344,646.49 and 2,153,878.70 is: 2,972,457.86
Step by Step Solution
- Step 1: Write the proportion equation
3,872,795.09 : 5,344,646.49 = 2,153,878.70 : x - Step 2: Convert to fraction form
3,872,795.09/5,344,646.49 = 2,153,878.70/x - Step 3: Cross multiply
3,872,795.09x = 5,344,646.49 × 2,153,878.70 - Step 4: Simplify right side
3,872,795.09x = 11,511,720,207,117.53 - Step 5: Solve for x
x = 11,511,720,207,117.53/3,872,795.09 - Step 6: Final answer
x = 2,972,457.86
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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.