Finding the Fourth Proportional to 7,831.10, 11,750.09 and 2,899.68
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Solution
The fourth proportional to 7,831.10, 11,750.09 and 2,899.68 is: 4,350.79
Step by Step Solution
- Step 1: Write the proportion equation
7,831.10 : 11,750.09 = 2,899.68 : x - Step 2: Convert to fraction form
7,831.10/11,750.09 = 2,899.68/x - Step 3: Cross multiply
7,831.10x = 11,750.09 × 2,899.68 - Step 4: Simplify right side
7,831.10x = 34,071,486.47 - Step 5: Solve for x
x = 34,071,486.47/7,831.10 - Step 6: Final answer
x = 4,350.79
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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.