Finding the Fourth Proportional to 7,214.99, 10,808.35 and 6,431.31
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Solution
The fourth proportional to 7,214.99, 10,808.35 and 6,431.31 is: 9,634.37
Step by Step Solution
- Step 1: Write the proportion equation
7,214.99 : 10,808.35 = 6,431.31 : x - Step 2: Convert to fraction form
7,214.99/10,808.35 = 6,431.31/x - Step 3: Cross multiply
7,214.99x = 10,808.35 × 6,431.31 - Step 4: Simplify right side
7,214.99x = 69,511,833.36 - Step 5: Solve for x
x = 69,511,833.36/7,214.99 - Step 6: Final answer
x = 9,634.37
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1.5x scale
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.