Home / 4,949.20-6,828.06-3,181.78

Finding the Fourth Proportional to 4,949.20, 6,828.06 and 3,181.78

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Solution

The fourth proportional to 4,949.20, 6,828.06 and 3,181.78 is: 4,389.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,949.20 : 6,828.06 = 3,181.78 : x
  2. Step 2: Convert to fraction form
    4,949.20/6,828.06 = 3,181.78/x
  3. Step 3: Cross multiply
    4,949.20x = 6,828.06 × 3,181.78
  4. Step 4: Simplify right side
    4,949.20x = 21,725,384.75
  5. Step 5: Solve for x
    x = 21,725,384.75/4,949.20
  6. Step 6: Final answer
    x = 4,389.68

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1.5x scale

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.