Home / 3,121.03-4,300.95-2,819.02

Finding the Fourth Proportional to 3,121.03, 4,300.95 and 2,819.02

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Solution

The fourth proportional to 3,121.03, 4,300.95 and 2,819.02 is: 3,884.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.03 : 4,300.95 = 2,819.02 : x
  2. Step 2: Convert to fraction form
    3,121.03/4,300.95 = 2,819.02/x
  3. Step 3: Cross multiply
    3,121.03x = 4,300.95 × 2,819.02
  4. Step 4: Simplify right side
    3,121.03x = 12,124,464.07
  5. Step 5: Solve for x
    x = 12,124,464.07/3,121.03
  6. Step 6: Final answer
    x = 3,884.76

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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.