Finding the Fourth Proportional to 10,428.24, 15,638.43 and 3,406.62
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Solution
The fourth proportional to 10,428.24, 15,638.43 and 3,406.62 is: 5,108.65
Step by Step Solution
- Step 1: Write the proportion equation
10,428.24 : 15,638.43 = 3,406.62 : x - Step 2: Convert to fraction form
10,428.24/15,638.43 = 3,406.62/x - Step 3: Cross multiply
10,428.24x = 15,638.43 × 3,406.62 - Step 4: Simplify right side
10,428.24x = 53,274,188.41 - Step 5: Solve for x
x = 53,274,188.41/10,428.24 - Step 6: Final answer
x = 5,108.65
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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.