Home / 2,768.80-3,821.58-1,887.52

Finding the Fourth Proportional to 2,768.80, 3,821.58 and 1,887.52

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Solution

The fourth proportional to 2,768.80, 3,821.58 and 1,887.52 is: 2,605.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.80 : 3,821.58 = 1,887.52 : x
  2. Step 2: Convert to fraction form
    2,768.80/3,821.58 = 1,887.52/x
  3. Step 3: Cross multiply
    2,768.80x = 3,821.58 × 1,887.52
  4. Step 4: Simplify right side
    2,768.80x = 7,213,308.68
  5. Step 5: Solve for x
    x = 7,213,308.68/2,768.80
  6. Step 6: Final answer
    x = 2,605.21

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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.