Finding the Fourth Proportional to 8,628.84, 11,913.84 and 6,864.60
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Solution
The fourth proportional to 8,628.84, 11,913.84 and 6,864.60 is: 9,477.95
Step by Step Solution
- Step 1: Write the proportion equation
8,628.84 : 11,913.84 = 6,864.60 : x - Step 2: Convert to fraction form
8,628.84/11,913.84 = 6,864.60/x - Step 3: Cross multiply
8,628.84x = 11,913.84 × 6,864.60 - Step 4: Simplify right side
8,628.84x = 81,783,746.06 - Step 5: Solve for x
x = 81,783,746.06/8,628.84 - Step 6: Final answer
x = 9,477.95
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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.