Home / 3,858.54-5,785.60-1,515.79

Finding the Fourth Proportional to 3,858.54, 5,785.60 and 1,515.79

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Solution

The fourth proportional to 3,858.54, 5,785.60 and 1,515.79 is: 2,272.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.54 : 5,785.60 = 1,515.79 : x
  2. Step 2: Convert to fraction form
    3,858.54/5,785.60 = 1,515.79/x
  3. Step 3: Cross multiply
    3,858.54x = 5,785.60 × 1,515.79
  4. Step 4: Simplify right side
    3,858.54x = 8,769,748.90
  5. Step 5: Solve for x
    x = 8,769,748.90/3,858.54
  6. Step 6: Final answer
    x = 2,272.82

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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.