Finding the Fourth Proportional to 3,939,005.00, 5,435,821.64 and 2,128,169.00
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Solution
The fourth proportional to 3,939,005.00, 5,435,821.64 and 2,128,169.00 is: 2,936,870.38
Step by Step Solution
- Step 1: Write the proportion equation
3,939,005.00 : 5,435,821.64 = 2,128,169.00 : x - Step 2: Convert to fraction form
3,939,005.00/5,435,821.64 = 2,128,169.00/x - Step 3: Cross multiply
3,939,005.00x = 5,435,821.64 × 2,128,169.00 - Step 4: Simplify right side
3,939,005.00x = 11,568,347,122,687.14 - Step 5: Solve for x
x = 11,568,347,122,687.14/3,939,005.00 - Step 6: Final answer
x = 2,936,870.38
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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.