Finding the Fourth Proportional to 3,903,717.63, 5,387,298.71 and 2,161,387.02
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Solution
The fourth proportional to 3,903,717.63, 5,387,298.71 and 2,161,387.02 is: 2,982,807.31
Step by Step Solution
- Step 1: Write the proportion equation
3,903,717.63 : 5,387,298.71 = 2,161,387.02 : x - Step 2: Convert to fraction form
3,903,717.63/5,387,298.71 = 2,161,387.02/x - Step 3: Cross multiply
3,903,717.63x = 5,387,298.71 × 2,161,387.02 - Step 4: Simplify right side
3,903,717.63x = 11,644,037,493,849.81 - Step 5: Solve for x
x = 11,644,037,493,849.81/3,903,717.63 - Step 6: Final answer
x = 2,982,807.31
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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.