Home / 7,128.41-10,694.03-2,745.90

Finding the Fourth Proportional to 7,128.41, 10,694.03 and 2,745.90

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Solution

The fourth proportional to 7,128.41, 10,694.03 and 2,745.90 is: 4,119.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.41 : 10,694.03 = 2,745.90 : x
  2. Step 2: Convert to fraction form
    7,128.41/10,694.03 = 2,745.90/x
  3. Step 3: Cross multiply
    7,128.41x = 10,694.03 × 2,745.90
  4. Step 4: Simplify right side
    7,128.41x = 29,364,723.25
  5. Step 5: Solve for x
    x = 29,364,723.25/7,128.41
  6. Step 6: Final answer
    x = 4,119.40

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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.