Finding the Fourth Proportional to 10,188.74, 15,283.16 and 3,615.12
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Solution
The fourth proportional to 10,188.74, 15,283.16 and 3,615.12 is: 5,422.70
Step by Step Solution
- Step 1: Write the proportion equation
10,188.74 : 15,283.16 = 3,615.12 : x - Step 2: Convert to fraction form
10,188.74/15,283.16 = 3,615.12/x - Step 3: Cross multiply
10,188.74x = 15,283.16 × 3,615.12 - Step 4: Simplify right side
10,188.74x = 55,250,439.30 - Step 5: Solve for x
x = 55,250,439.30/10,188.74 - Step 6: Final answer
x = 5,422.70
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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.