Finding the Fourth Proportional to 5,430, 8,145.08 and 1,326
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Solution
The fourth proportional to 5,430, 8,145.08 and 1,326 is: 1,989.02
Step by Step Solution
- Step 1: Write the proportion equation
5,430 : 8,145.08 = 1,326 : x - Step 2: Convert to fraction form
5,430/8,145.08 = 1,326/x - Step 3: Cross multiply
5,430x = 8,145.08 × 1,326 - Step 4: Simplify right side
5,430x = 10,800,376.08 - Step 5: Solve for x
x = 10,800,376.08/5,430 - Step 6: Final answer
x = 1,989.02
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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.