Finding the Fourth Proportional to 8,776.22, 12,114.06 and 6,986.99
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Solution
The fourth proportional to 8,776.22, 12,114.06 and 6,986.99 is: 9,644.34
Step by Step Solution
- Step 1: Write the proportion equation
8,776.22 : 12,114.06 = 6,986.99 : x - Step 2: Convert to fraction form
8,776.22/12,114.06 = 6,986.99/x - Step 3: Cross multiply
8,776.22x = 12,114.06 × 6,986.99 - Step 4: Simplify right side
8,776.22x = 84,640,816.08 - Step 5: Solve for x
x = 84,640,816.08/8,776.22 - Step 6: Final answer
x = 9,644.34
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1.5x scale
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.