Home / 3,936.93-5,427.52-2,815.91

Finding the Fourth Proportional to 3,936.93, 5,427.52 and 2,815.91

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Solution

The fourth proportional to 3,936.93, 5,427.52 and 2,815.91 is: 3,882.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.93 : 5,427.52 = 2,815.91 : x
  2. Step 2: Convert to fraction form
    3,936.93/5,427.52 = 2,815.91/x
  3. Step 3: Cross multiply
    3,936.93x = 5,427.52 × 2,815.91
  4. Step 4: Simplify right side
    3,936.93x = 15,283,393.76
  5. Step 5: Solve for x
    x = 15,283,393.76/3,936.93
  6. Step 6: Final answer
    x = 3,882.06

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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.