Home / 3,828.56-5,282.52-2,778.80

Finding the Fourth Proportional to 3,828.56, 5,282.52 and 2,778.80

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Solution

The fourth proportional to 3,828.56, 5,282.52 and 2,778.80 is: 3,834.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.56 : 5,282.52 = 2,778.80 : x
  2. Step 2: Convert to fraction form
    3,828.56/5,282.52 = 2,778.80/x
  3. Step 3: Cross multiply
    3,828.56x = 5,282.52 × 2,778.80
  4. Step 4: Simplify right side
    3,828.56x = 14,679,066.58
  5. Step 5: Solve for x
    x = 14,679,066.58/3,828.56
  6. Step 6: Final answer
    x = 3,834.10

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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.