Finding the Fourth Proportional to 3,749,894.81, 5,174,830.73 and 2,118,830.21
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Solution
The fourth proportional to 3,749,894.81, 5,174,830.73 and 2,118,830.21 is: 2,923,972.07
Step by Step Solution
- Step 1: Write the proportion equation
3,749,894.81 : 5,174,830.73 = 2,118,830.21 : x - Step 2: Convert to fraction form
3,749,894.81/5,174,830.73 = 2,118,830.21/x - Step 3: Cross multiply
3,749,894.81x = 5,174,830.73 × 2,118,830.21 - Step 4: Simplify right side
3,749,894.81x = 10,964,587,666,774.74 - Step 5: Solve for x
x = 10,964,587,666,774.74/3,749,894.81 - Step 6: Final answer
x = 2,923,972.07
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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.