Home / 3,188.19-4,780.62-1,338.96

Finding the Fourth Proportional to 3,188.19, 4,780.62 and 1,338.96

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Solution

The fourth proportional to 3,188.19, 4,780.62 and 1,338.96 is: 2,007.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.19 : 4,780.62 = 1,338.96 : x
  2. Step 2: Convert to fraction form
    3,188.19/4,780.62 = 1,338.96/x
  3. Step 3: Cross multiply
    3,188.19x = 4,780.62 × 1,338.96
  4. Step 4: Simplify right side
    3,188.19x = 6,401,058.96
  5. Step 5: Solve for x
    x = 6,401,058.96/3,188.19
  6. Step 6: Final answer
    x = 2,007.74

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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.