Finding the Fourth Proportional to 3,903,725.12, 5,387,309.06 and 2,161,394.52
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Solution
The fourth proportional to 3,903,725.12, 5,387,309.06 and 2,161,394.52 is: 2,982,817.67
Step by Step Solution
- Step 1: Write the proportion equation
3,903,725.12 : 5,387,309.06 = 2,161,394.52 : x - Step 2: Convert to fraction form
3,903,725.12/5,387,309.06 = 2,161,394.52/x - Step 3: Cross multiply
3,903,725.12x = 5,387,309.06 × 2,161,394.52 - Step 4: Simplify right side
3,903,725.12x = 11,644,100,279,830.35 - Step 5: Solve for x
x = 11,644,100,279,830.35/3,903,725.12 - Step 6: Final answer
x = 2,982,817.67
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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.