Home / 3,290.20-4,538.78-2,228

Finding the Fourth Proportional to 3,290.20, 4,538.78 and 2,228

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Solution

The fourth proportional to 3,290.20, 4,538.78 and 2,228 is: 3,073.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.20 : 4,538.78 = 2,228 : x
  2. Step 2: Convert to fraction form
    3,290.20/4,538.78 = 2,228/x
  3. Step 3: Cross multiply
    3,290.20x = 4,538.78 × 2,228
  4. Step 4: Simplify right side
    3,290.20x = 10,112,401.84
  5. Step 5: Solve for x
    x = 10,112,401.84/3,290.20
  6. Step 6: Final answer
    x = 3,073.49

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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.