Finding the Fourth Proportional to 5,211,031.68, 7,191,510.84 and 2,887,875.36
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Solution
The fourth proportional to 5,211,031.68, 7,191,510.84 and 2,887,875.36 is: 3,985,427.12
Step by Step Solution
- Step 1: Write the proportion equation
5,211,031.68 : 7,191,510.84 = 2,887,875.36 : x - Step 2: Convert to fraction form
5,211,031.68/7,191,510.84 = 2,887,875.36/x - Step 3: Cross multiply
5,211,031.68x = 7,191,510.84 × 2,887,875.36 - Step 4: Simplify right side
5,211,031.68x = 20,768,186,956,008.90 - Step 5: Solve for x
x = 20,768,186,956,008.90/5,211,031.68 - Step 6: Final answer
x = 3,985,427.12
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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.