Home / 4,780.71-7,170.84-1,819.83

Finding the Fourth Proportional to 4,780.71, 7,170.84 and 1,819.83

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Solution

The fourth proportional to 4,780.71, 7,170.84 and 1,819.83 is: 2,729.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.71 : 7,170.84 = 1,819.83 : x
  2. Step 2: Convert to fraction form
    4,780.71/7,170.84 = 1,819.83/x
  3. Step 3: Cross multiply
    4,780.71x = 7,170.84 × 1,819.83
  4. Step 4: Simplify right side
    4,780.71x = 13,049,709.76
  5. Step 5: Solve for x
    x = 13,049,709.76/4,780.71
  6. Step 6: Final answer
    x = 2,729.66

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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.