Home / 2,555.82-3,828.78-1,970.28

Finding the Fourth Proportional to 2,555.82, 3,828.78 and 1,970.28

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Solution

The fourth proportional to 2,555.82, 3,828.78 and 1,970.28 is: 2,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.82 : 3,828.78 = 1,970.28 : x
  2. Step 2: Convert to fraction form
    2,555.82/3,828.78 = 1,970.28/x
  3. Step 3: Cross multiply
    2,555.82x = 3,828.78 × 1,970.28
  4. Step 4: Simplify right side
    2,555.82x = 7,543,768.66
  5. Step 5: Solve for x
    x = 7,543,768.66/2,555.82
  6. Step 6: Final answer
    x = 2,951.60

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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.