Home / 3,280.89-4,921.20-1,333.02

Finding the Fourth Proportional to 3,280.89, 4,921.20 and 1,333.02

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Solution

The fourth proportional to 3,280.89, 4,921.20 and 1,333.02 is: 1,999.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.89 : 4,921.20 = 1,333.02 : x
  2. Step 2: Convert to fraction form
    3,280.89/4,921.20 = 1,333.02/x
  3. Step 3: Cross multiply
    3,280.89x = 4,921.20 × 1,333.02
  4. Step 4: Simplify right side
    3,280.89x = 6,560,058.02
  5. Step 5: Solve for x
    x = 6,560,058.02/3,280.89
  6. Step 6: Final answer
    x = 1,999.48

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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.