Home / 3,907.44-5,389.74-2,728.89

Finding the Fourth Proportional to 3,907.44, 5,389.74 and 2,728.89

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Solution

The fourth proportional to 3,907.44, 5,389.74 and 2,728.89 is: 3,764.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.44 : 5,389.74 = 2,728.89 : x
  2. Step 2: Convert to fraction form
    3,907.44/5,389.74 = 2,728.89/x
  3. Step 3: Cross multiply
    3,907.44x = 5,389.74 × 2,728.89
  4. Step 4: Simplify right side
    3,907.44x = 14,708,007.59
  5. Step 5: Solve for x
    x = 14,708,007.59/3,907.44
  6. Step 6: Final answer
    x = 3,764.10

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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.