Home / 2,780.92-3,836.23-1,884.70

Finding the Fourth Proportional to 2,780.92, 3,836.23 and 1,884.70

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Solution

The fourth proportional to 2,780.92, 3,836.23 and 1,884.70 is: 2,599.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.92 : 3,836.23 = 1,884.70 : x
  2. Step 2: Convert to fraction form
    2,780.92/3,836.23 = 1,884.70/x
  3. Step 3: Cross multiply
    2,780.92x = 3,836.23 × 1,884.70
  4. Step 4: Simplify right side
    2,780.92x = 7,230,142.76
  5. Step 5: Solve for x
    x = 7,230,142.76/2,780.92
  6. Step 6: Final answer
    x = 2,599.91

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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.