Finding the Fourth Proportional to 7,988.14, 11,023.66 and 4,451.26
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Solution
The fourth proportional to 7,988.14, 11,023.66 and 4,451.26 is: 6,142.75
Step by Step Solution
- Step 1: Write the proportion equation
7,988.14 : 11,023.66 = 4,451.26 : x - Step 2: Convert to fraction form
7,988.14/11,023.66 = 4,451.26/x - Step 3: Cross multiply
7,988.14x = 11,023.66 × 4,451.26 - Step 4: Simplify right side
7,988.14x = 49,069,176.81 - Step 5: Solve for x
x = 49,069,176.81/7,988.14 - Step 6: Final answer
x = 6,142.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.