Home / 6,687.84-10,028.40-2,791.20

Finding the Fourth Proportional to 6,687.84, 10,028.40 and 2,791.20

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Solution

The fourth proportional to 6,687.84, 10,028.40 and 2,791.20 is: 4,185.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,687.84 : 10,028.40 = 2,791.20 : x
  2. Step 2: Convert to fraction form
    6,687.84/10,028.40 = 2,791.20/x
  3. Step 3: Cross multiply
    6,687.84x = 10,028.40 × 2,791.20
  4. Step 4: Simplify right side
    6,687.84x = 27,991,270.08
  5. Step 5: Solve for x
    x = 27,991,270.08/6,687.84
  6. Step 6: Final answer
    x = 4,185.40

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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.