Finding the Fourth Proportional to 8,518.24, 12,780.64 and 3,898
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Solution
The fourth proportional to 8,518.24, 12,780.64 and 3,898 is: 5,848.50
Step by Step Solution
- Step 1: Write the proportion equation
8,518.24 : 12,780.64 = 3,898 : x - Step 2: Convert to fraction form
8,518.24/12,780.64 = 3,898/x - Step 3: Cross multiply
8,518.24x = 12,780.64 × 3,898 - Step 4: Simplify right side
8,518.24x = 49,818,934.72 - Step 5: Solve for x
x = 49,818,934.72/8,518.24 - Step 6: Final answer
x = 5,848.50
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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.