Finding the Fourth Proportional to 2,969.43, 4,455.17 and 1,121.07
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Solution
The fourth proportional to 2,969.43, 4,455.17 and 1,121.07 is: 1,681.99
Step by Step Solution
- Step 1: Write the proportion equation
2,969.43 : 4,455.17 = 1,121.07 : x - Step 2: Convert to fraction form
2,969.43/4,455.17 = 1,121.07/x - Step 3: Cross multiply
2,969.43x = 4,455.17 × 1,121.07 - Step 4: Simplify right side
2,969.43x = 4,994,557.43 - Step 5: Solve for x
x = 4,994,557.43/2,969.43 - Step 6: Final answer
x = 1,681.99
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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.