Home / 3,828.06-5,281.83-2,778.30

Finding the Fourth Proportional to 3,828.06, 5,281.83 and 2,778.30

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Solution

The fourth proportional to 3,828.06, 5,281.83 and 2,778.30 is: 3,833.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.06 : 5,281.83 = 2,778.30 : x
  2. Step 2: Convert to fraction form
    3,828.06/5,281.83 = 2,778.30/x
  3. Step 3: Cross multiply
    3,828.06x = 5,281.83 × 2,778.30
  4. Step 4: Simplify right side
    3,828.06x = 14,674,508.29
  5. Step 5: Solve for x
    x = 14,674,508.29/3,828.06
  6. Step 6: Final answer
    x = 3,833.41

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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.