Home / 3,904.32-5,855.56-1,928

Finding the Fourth Proportional to 3,904.32, 5,855.56 and 1,928

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Solution

The fourth proportional to 3,904.32, 5,855.56 and 1,928 is: 2,891.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.32 : 5,855.56 = 1,928 : x
  2. Step 2: Convert to fraction form
    3,904.32/5,855.56 = 1,928/x
  3. Step 3: Cross multiply
    3,904.32x = 5,855.56 × 1,928
  4. Step 4: Simplify right side
    3,904.32x = 11,289,519.68
  5. Step 5: Solve for x
    x = 11,289,519.68/3,904.32
  6. Step 6: Final answer
    x = 2,891.55

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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.