Home / 1,578.94-2,179.02-1,382.10

Finding the Fourth Proportional to 1,578.94, 2,179.02 and 1,382.10

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Solution

The fourth proportional to 1,578.94, 2,179.02 and 1,382.10 is: 1,907.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.94 : 2,179.02 = 1,382.10 : x
  2. Step 2: Convert to fraction form
    1,578.94/2,179.02 = 1,382.10/x
  3. Step 3: Cross multiply
    1,578.94x = 2,179.02 × 1,382.10
  4. Step 4: Simplify right side
    1,578.94x = 3,011,623.54
  5. Step 5: Solve for x
    x = 3,011,623.54/1,578.94
  6. Step 6: Final answer
    x = 1,907.37

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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.