Finding the Fourth Proportional to 7,871.84, 11,750.17 and 6,937.70
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Solution
The fourth proportional to 7,871.84, 11,750.17 and 6,937.70 is: 10,355.79
Step by Step Solution
- Step 1: Write the proportion equation
7,871.84 : 11,750.17 = 6,937.70 : x - Step 2: Convert to fraction form
7,871.84/11,750.17 = 6,937.70/x - Step 3: Cross multiply
7,871.84x = 11,750.17 × 6,937.70 - Step 4: Simplify right side
7,871.84x = 81,519,091.32 - Step 5: Solve for x
x = 81,519,091.32/7,871.84 - Step 6: Final answer
x = 10,355.79
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.