Finding the Fourth Proportional to 7,589.12, 11,354.88 and 6,821.76
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Solution
The fourth proportional to 7,589.12, 11,354.88 and 6,821.76 is: 10,206.75
Step by Step Solution
- Step 1: Write the proportion equation
7,589.12 : 11,354.88 = 6,821.76 : x - Step 2: Convert to fraction form
7,589.12/11,354.88 = 6,821.76/x - Step 3: Cross multiply
7,589.12x = 11,354.88 × 6,821.76 - Step 4: Simplify right side
7,589.12x = 77,460,266.19 - Step 5: Solve for x
x = 77,460,266.19/7,589.12 - Step 6: Final answer
x = 10,206.75
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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.