Finding the Fourth Proportional to 1,714.24, 2,571.12 and 688
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Solution
The fourth proportional to 1,714.24, 2,571.12 and 688 is: 1,031.90
Step by Step Solution
- Step 1: Write the proportion equation
1,714.24 : 2,571.12 = 688 : x - Step 2: Convert to fraction form
1,714.24/2,571.12 = 688/x - Step 3: Cross multiply
1,714.24x = 2,571.12 × 688 - Step 4: Simplify right side
1,714.24x = 1,768,930.56 - Step 5: Solve for x
x = 1,768,930.56/1,714.24 - Step 6: Final answer
x = 1,031.90
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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.