Finding the Fourth Proportional to 7,860.97, 11,777.57 and 4,154.99
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Solution
The fourth proportional to 7,860.97, 11,777.57 and 4,154.99 is: 6,225.15
Step by Step Solution
- Step 1: Write the proportion equation
7,860.97 : 11,777.57 = 4,154.99 : x - Step 2: Convert to fraction form
7,860.97/11,777.57 = 4,154.99/x - Step 3: Cross multiply
7,860.97x = 11,777.57 × 4,154.99 - Step 4: Simplify right side
7,860.97x = 48,935,664.80 - Step 5: Solve for x
x = 48,935,664.80/7,860.97 - Step 6: Final answer
x = 6,225.15
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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.