Finding the Fourth Proportional to 7,135.28, 10,698.36 and 3,430.14
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Solution
The fourth proportional to 7,135.28, 10,698.36 and 3,430.14 is: 5,143.01
Step by Step Solution
- Step 1: Write the proportion equation
7,135.28 : 10,698.36 = 3,430.14 : x - Step 2: Convert to fraction form
7,135.28/10,698.36 = 3,430.14/x - Step 3: Cross multiply
7,135.28x = 10,698.36 × 3,430.14 - Step 4: Simplify right side
7,135.28x = 36,696,819.08 - Step 5: Solve for x
x = 36,696,819.08/7,135.28 - Step 6: Final answer
x = 5,143.01
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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.