Finding the Fourth Proportional to 8,555.92, 12,839.64 and 3,009.31
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Solution
The fourth proportional to 8,555.92, 12,839.64 and 3,009.31 is: 4,515.99
Step by Step Solution
- Step 1: Write the proportion equation
8,555.92 : 12,839.64 = 3,009.31 : x - Step 2: Convert to fraction form
8,555.92/12,839.64 = 3,009.31/x - Step 3: Cross multiply
8,555.92x = 12,839.64 × 3,009.31 - Step 4: Simplify right side
8,555.92x = 38,638,457.05 - Step 5: Solve for x
x = 38,638,457.05/8,555.92 - Step 6: Final answer
x = 4,515.99
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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.