Home / 2,228.85-3,076.11-1,390.41

Finding the Fourth Proportional to 2,228.85, 3,076.11 and 1,390.41

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Solution

The fourth proportional to 2,228.85, 3,076.11 and 1,390.41 is: 1,918.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.85 : 3,076.11 = 1,390.41 : x
  2. Step 2: Convert to fraction form
    2,228.85/3,076.11 = 1,390.41/x
  3. Step 3: Cross multiply
    2,228.85x = 3,076.11 × 1,390.41
  4. Step 4: Simplify right side
    2,228.85x = 4,277,054.11
  5. Step 5: Solve for x
    x = 4,277,054.11/2,228.85
  6. Step 6: Final answer
    x = 1,918.95

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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.