Finding the Fourth Proportional to 7,831.12, 11,734.08 and 5,756.08
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Solution
The fourth proportional to 7,831.12, 11,734.08 and 5,756.08 is: 8,624.86
Step by Step Solution
- Step 1: Write the proportion equation
7,831.12 : 11,734.08 = 5,756.08 : x - Step 2: Convert to fraction form
7,831.12/11,734.08 = 5,756.08/x - Step 3: Cross multiply
7,831.12x = 11,734.08 × 5,756.08 - Step 4: Simplify right side
7,831.12x = 67,542,303.21 - Step 5: Solve for x
x = 67,542,303.21/7,831.12 - Step 6: Final answer
x = 8,624.86
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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.