Home / 3,936.06-5,428.24-2,799.50

Finding the Fourth Proportional to 3,936.06, 5,428.24 and 2,799.50

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Solution

The fourth proportional to 3,936.06, 5,428.24 and 2,799.50 is: 3,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.06 : 5,428.24 = 2,799.50 : x
  2. Step 2: Convert to fraction form
    3,936.06/5,428.24 = 2,799.50/x
  3. Step 3: Cross multiply
    3,936.06x = 5,428.24 × 2,799.50
  4. Step 4: Simplify right side
    3,936.06x = 15,196,323.74
  5. Step 5: Solve for x
    x = 15,196,323.74/3,936.06
  6. Step 6: Final answer
    x = 3,860.80

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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.