Finding the Fourth Proportional to 2,111.97, 3,167.97 and 651.09
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Solution
The fourth proportional to 2,111.97, 3,167.97 and 651.09 is: 976.64
Step by Step Solution
- Step 1: Write the proportion equation
2,111.97 : 3,167.97 = 651.09 : x - Step 2: Convert to fraction form
2,111.97/3,167.97 = 651.09/x - Step 3: Cross multiply
2,111.97x = 3,167.97 × 651.09 - Step 4: Simplify right side
2,111.97x = 2,062,633.59 - Step 5: Solve for x
x = 2,062,633.59/2,111.97 - Step 6: Final answer
x = 976.64
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.