Finding the Fourth Proportional to 2,121,986.95, 2,928,342.30 and 1,155,124.57
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Solution
The fourth proportional to 2,121,986.95, 2,928,342.30 and 1,155,124.57 is: 1,594,072.07
Step by Step Solution
- Step 1: Write the proportion equation
2,121,986.95 : 2,928,342.30 = 1,155,124.57 : x - Step 2: Convert to fraction form
2,121,986.95/2,928,342.30 = 1,155,124.57/x - Step 3: Cross multiply
2,121,986.95x = 2,928,342.30 × 1,155,124.57 - Step 4: Simplify right side
2,121,986.95x = 3,382,600,140,100.31 - Step 5: Solve for x
x = 3,382,600,140,100.31/2,121,986.95 - Step 6: Final answer
x = 1,594,072.07
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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.