Finding the Fourth Proportional to 2,087,644.74, 2,881,020.66 and 1,991,985.36
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Solution
The fourth proportional to 2,087,644.74, 2,881,020.66 and 1,991,985.36 is: 2,749,007.47
Step by Step Solution
- Step 1: Write the proportion equation
2,087,644.74 : 2,881,020.66 = 1,991,985.36 : x - Step 2: Convert to fraction form
2,087,644.74/2,881,020.66 = 1,991,985.36/x - Step 3: Cross multiply
2,087,644.74x = 2,881,020.66 × 1,991,985.36 - Step 4: Simplify right side
2,087,644.74x = 5,738,950,991,116.34 - Step 5: Solve for x
x = 5,738,950,991,116.34/2,087,644.74 - Step 6: Final answer
x = 2,749,007.47
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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.