Finding the Fourth Proportional to 3,991,828.74, 5,508,725.94 and 2,156,287.02
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Solution
The fourth proportional to 3,991,828.74, 5,508,725.94 and 2,156,287.02 is: 2,975,677.32
Step by Step Solution
- Step 1: Write the proportion equation
3,991,828.74 : 5,508,725.94 = 2,156,287.02 : x - Step 2: Convert to fraction form
3,991,828.74/5,508,725.94 = 2,156,287.02/x - Step 3: Cross multiply
3,991,828.74x = 5,508,725.94 × 2,156,287.02 - Step 4: Simplify right side
3,991,828.74x = 11,878,394,241,159.30 - Step 5: Solve for x
x = 11,878,394,241,159.30/3,991,828.74 - Step 6: Final answer
x = 2,975,677.32
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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.