Finding the Fourth Proportional to 7,917.16, 11,876.36 and 2,652.19
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Solution
The fourth proportional to 7,917.16, 11,876.36 and 2,652.19 is: 3,978.49
Step by Step Solution
- Step 1: Write the proportion equation
7,917.16 : 11,876.36 = 2,652.19 : x - Step 2: Convert to fraction form
7,917.16/11,876.36 = 2,652.19/x - Step 3: Cross multiply
7,917.16x = 11,876.36 × 2,652.19 - Step 4: Simplify right side
7,917.16x = 31,498,363.23 - Step 5: Solve for x
x = 31,498,363.23/7,917.16 - Step 6: Final answer
x = 3,978.49
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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.