Finding the Fourth Proportional to 7,378.05, 10,188.93 and 6,309.63
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Solution
The fourth proportional to 7,378.05, 10,188.93 and 6,309.63 is: 8,713.46
Step by Step Solution
- Step 1: Write the proportion equation
7,378.05 : 10,188.93 = 6,309.63 : x - Step 2: Convert to fraction form
7,378.05/10,188.93 = 6,309.63/x - Step 3: Cross multiply
7,378.05x = 10,188.93 × 6,309.63 - Step 4: Simplify right side
7,378.05x = 64,288,378.40 - Step 5: Solve for x
x = 64,288,378.40/7,378.05 - Step 6: Final answer
x = 8,713.46
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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.