Finding the Fourth Proportional to 7,778.15, 11,657.14 and 4,070.99
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Solution
The fourth proportional to 7,778.15, 11,657.14 and 4,070.99 is: 6,101.20
Step by Step Solution
- Step 1: Write the proportion equation
7,778.15 : 11,657.14 = 4,070.99 : x - Step 2: Convert to fraction form
7,778.15/11,657.14 = 4,070.99/x - Step 3: Cross multiply
7,778.15x = 11,657.14 × 4,070.99 - Step 4: Simplify right side
7,778.15x = 47,456,031.91 - Step 5: Solve for x
x = 47,456,031.91/7,778.15 - Step 6: Final answer
x = 6,101.20
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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.