Home / 3,181.98-4,789.59-2,880.12

Finding the Fourth Proportional to 3,181.98, 4,789.59 and 2,880.12

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Solution

The fourth proportional to 3,181.98, 4,789.59 and 2,880.12 is: 4,335.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.98 : 4,789.59 = 2,880.12 : x
  2. Step 2: Convert to fraction form
    3,181.98/4,789.59 = 2,880.12/x
  3. Step 3: Cross multiply
    3,181.98x = 4,789.59 × 2,880.12
  4. Step 4: Simplify right side
    3,181.98x = 13,794,593.95
  5. Step 5: Solve for x
    x = 13,794,593.95/3,181.98
  6. Step 6: Final answer
    x = 4,335.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.