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Finding the Fourth Proportional to 3,510.09, 4,843.95 and 1,938.24

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Solution

The fourth proportional to 3,510.09, 4,843.95 and 1,938.24 is: 2,674.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,510.09 : 4,843.95 = 1,938.24 : x
  2. Step 2: Convert to fraction form
    3,510.09/4,843.95 = 1,938.24/x
  3. Step 3: Cross multiply
    3,510.09x = 4,843.95 × 1,938.24
  4. Step 4: Simplify right side
    3,510.09x = 9,388,737.65
  5. Step 5: Solve for x
    x = 9,388,737.65/3,510.09
  6. Step 6: Final answer
    x = 2,674.79

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Half scale
Find fourth proportional to 7,020.18, 9,687.90 and 3,876.48
Double scale
Find fourth proportional to 3,511.09, 4,845.33 and 1,939.24
Similar ratio
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1.5x scale

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.