Home / 2,208.81-3,311.55-1,904.25

Finding the Fourth Proportional to 2,208.81, 3,311.55 and 1,904.25

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Solution

The fourth proportional to 2,208.81, 3,311.55 and 1,904.25 is: 2,854.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.81 : 3,311.55 = 1,904.25 : x
  2. Step 2: Convert to fraction form
    2,208.81/3,311.55 = 1,904.25/x
  3. Step 3: Cross multiply
    2,208.81x = 3,311.55 × 1,904.25
  4. Step 4: Simplify right side
    2,208.81x = 6,306,019.09
  5. Step 5: Solve for x
    x = 6,306,019.09/2,208.81
  6. Step 6: Final answer
    x = 2,854.94

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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.