Finding the Fourth Proportional to 7,720.44, 11,580.62 and 1,877.08
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Solution
The fourth proportional to 7,720.44, 11,580.62 and 1,877.08 is: 2,815.61
Step by Step Solution
- Step 1: Write the proportion equation
7,720.44 : 11,580.62 = 1,877.08 : x - Step 2: Convert to fraction form
7,720.44/11,580.62 = 1,877.08/x - Step 3: Cross multiply
7,720.44x = 11,580.62 × 1,877.08 - Step 4: Simplify right side
7,720.44x = 21,737,750.19 - Step 5: Solve for x
x = 21,737,750.19/7,720.44 - Step 6: Final answer
x = 2,815.61
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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.