Finding the Fourth Proportional to 8,686.80, 13,030.08 and 2,112.99
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Solution
The fourth proportional to 8,686.80, 13,030.08 and 2,112.99 is: 3,169.46
Step by Step Solution
- Step 1: Write the proportion equation
8,686.80 : 13,030.08 = 2,112.99 : x - Step 2: Convert to fraction form
8,686.80/13,030.08 = 2,112.99/x - Step 3: Cross multiply
8,686.80x = 13,030.08 × 2,112.99 - Step 4: Simplify right side
8,686.80x = 27,532,428.74 - Step 5: Solve for x
x = 27,532,428.74/8,686.80 - Step 6: Final answer
x = 3,169.46
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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.