Finding the Fourth Proportional to 3,887,995.79, 5,365,437.56 and 2,169,116.66
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Solution
The fourth proportional to 3,887,995.79, 5,365,437.56 and 2,169,116.66 is: 2,993,382.86
Step by Step Solution
- Step 1: Write the proportion equation
3,887,995.79 : 5,365,437.56 = 2,169,116.66 : x - Step 2: Convert to fraction form
3,887,995.79/5,365,437.56 = 2,169,116.66/x - Step 3: Cross multiply
3,887,995.79x = 5,365,437.56 × 2,169,116.66 - Step 4: Simplify right side
3,887,995.79x = 11,638,259,961,912.98 - Step 5: Solve for x
x = 11,638,259,961,912.98/3,887,995.79 - Step 6: Final answer
x = 2,993,382.86
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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.