Finding the Fourth Proportional to 7,177.43, 9,904.99 and 3,990.99
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Solution
The fourth proportional to 7,177.43, 9,904.99 and 3,990.99 is: 5,507.64
Step by Step Solution
- Step 1: Write the proportion equation
7,177.43 : 9,904.99 = 3,990.99 : x - Step 2: Convert to fraction form
7,177.43/9,904.99 = 3,990.99/x - Step 3: Cross multiply
7,177.43x = 9,904.99 × 3,990.99 - Step 4: Simplify right side
7,177.43x = 39,530,716.04 - Step 5: Solve for x
x = 39,530,716.04/7,177.43 - Step 6: Final answer
x = 5,507.64
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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.