Home / 3,138.39-4,708.53-2,828.79

Finding the Fourth Proportional to 3,138.39, 4,708.53 and 2,828.79

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Solution

The fourth proportional to 3,138.39, 4,708.53 and 2,828.79 is: 4,244.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.39 : 4,708.53 = 2,828.79 : x
  2. Step 2: Convert to fraction form
    3,138.39/4,708.53 = 2,828.79/x
  3. Step 3: Cross multiply
    3,138.39x = 4,708.53 × 2,828.79
  4. Step 4: Simplify right side
    3,138.39x = 13,319,442.58
  5. Step 5: Solve for x
    x = 13,319,442.58/3,138.39
  6. Step 6: Final answer
    x = 4,244.04

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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.