Home / 3,571.80-5,356.89-1,815.68

Finding the Fourth Proportional to 3,571.80, 5,356.89 and 1,815.68

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Solution

The fourth proportional to 3,571.80, 5,356.89 and 1,815.68 is: 2,723.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.80 : 5,356.89 = 1,815.68 : x
  2. Step 2: Convert to fraction form
    3,571.80/5,356.89 = 1,815.68/x
  3. Step 3: Cross multiply
    3,571.80x = 5,356.89 × 1,815.68
  4. Step 4: Simplify right side
    3,571.80x = 9,726,371.25
  5. Step 5: Solve for x
    x = 9,726,371.25/3,571.80
  6. Step 6: Final answer
    x = 2,723.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.