Finding the Fourth Proportional to 7,867.13, 11,805.21 and 2,937.06
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Solution
The fourth proportional to 7,867.13, 11,805.21 and 2,937.06 is: 4,407.28
Step by Step Solution
- Step 1: Write the proportion equation
7,867.13 : 11,805.21 = 2,937.06 : x - Step 2: Convert to fraction form
7,867.13/11,805.21 = 2,937.06/x - Step 3: Cross multiply
7,867.13x = 11,805.21 × 2,937.06 - Step 4: Simplify right side
7,867.13x = 34,672,610.08 - Step 5: Solve for x
x = 34,672,610.08/7,867.13 - Step 6: Final answer
x = 4,407.28
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1.5x scale
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.