Finding the Fourth Proportional to 7,867.57, 10,857.51 and 4,331.05
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Solution
The fourth proportional to 7,867.57, 10,857.51 and 4,331.05 is: 5,976.99
Step by Step Solution
- Step 1: Write the proportion equation
7,867.57 : 10,857.51 = 4,331.05 : x - Step 2: Convert to fraction form
7,867.57/10,857.51 = 4,331.05/x - Step 3: Cross multiply
7,867.57x = 10,857.51 × 4,331.05 - Step 4: Simplify right side
7,867.57x = 47,024,397.03 - Step 5: Solve for x
x = 47,024,397.03/7,867.57 - Step 6: Final answer
x = 5,976.99
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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.