Finding the Fourth Proportional to 7,767.70, 10,725.74 and 6,332.28
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Solution
The fourth proportional to 7,767.70, 10,725.74 and 6,332.28 is: 8,743.70
Step by Step Solution
- Step 1: Write the proportion equation
7,767.70 : 10,725.74 = 6,332.28 : x - Step 2: Convert to fraction form
7,767.70/10,725.74 = 6,332.28/x - Step 3: Cross multiply
7,767.70x = 10,725.74 × 6,332.28 - Step 4: Simplify right side
7,767.70x = 67,918,449.06 - Step 5: Solve for x
x = 67,918,449.06/7,767.70 - Step 6: Final answer
x = 8,743.70
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1.5x scale
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.