Finding the Fourth Proportional to 7,682.76, 11,539.80 and 6,778.80
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Solution
The fourth proportional to 7,682.76, 11,539.80 and 6,778.80 is: 10,182.02
Step by Step Solution
- Step 1: Write the proportion equation
7,682.76 : 11,539.80 = 6,778.80 : x - Step 2: Convert to fraction form
7,682.76/11,539.80 = 6,778.80/x - Step 3: Cross multiply
7,682.76x = 11,539.80 × 6,778.80 - Step 4: Simplify right side
7,682.76x = 78,225,996.24 - Step 5: Solve for x
x = 78,225,996.24/7,682.76 - Step 6: Final answer
x = 10,182.02
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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.