Home / 3,936.24-5,428.98-2,756.88

Finding the Fourth Proportional to 3,936.24, 5,428.98 and 2,756.88

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Solution

The fourth proportional to 3,936.24, 5,428.98 and 2,756.88 is: 3,802.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.24 : 5,428.98 = 2,756.88 : x
  2. Step 2: Convert to fraction form
    3,936.24/5,428.98 = 2,756.88/x
  3. Step 3: Cross multiply
    3,936.24x = 5,428.98 × 2,756.88
  4. Step 4: Simplify right side
    3,936.24x = 14,967,046.38
  5. Step 5: Solve for x
    x = 14,967,046.38/3,936.24
  6. Step 6: Final answer
    x = 3,802.37

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1.5x scale

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.