Home / 3,321.78-4,983.45-1,013.28

Finding the Fourth Proportional to 3,321.78, 4,983.45 and 1,013.28

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Solution

The fourth proportional to 3,321.78, 4,983.45 and 1,013.28 is: 1,520.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.78 : 4,983.45 = 1,013.28 : x
  2. Step 2: Convert to fraction form
    3,321.78/4,983.45 = 1,013.28/x
  3. Step 3: Cross multiply
    3,321.78x = 4,983.45 × 1,013.28
  4. Step 4: Simplify right side
    3,321.78x = 5,049,630.22
  5. Step 5: Solve for x
    x = 5,049,630.22/3,321.78
  6. Step 6: Final answer
    x = 1,520.16

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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.