Home / 2,780.54-4,171.97-1,219.74

Finding the Fourth Proportional to 2,780.54, 4,171.97 and 1,219.74

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Solution

The fourth proportional to 2,780.54, 4,171.97 and 1,219.74 is: 1,830.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.54 : 4,171.97 = 1,219.74 : x
  2. Step 2: Convert to fraction form
    2,780.54/4,171.97 = 1,219.74/x
  3. Step 3: Cross multiply
    2,780.54x = 4,171.97 × 1,219.74
  4. Step 4: Simplify right side
    2,780.54x = 5,088,711.31
  5. Step 5: Solve for x
    x = 5,088,711.31/2,780.54
  6. Step 6: Final answer
    x = 1,830.12

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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.