Home / 8,745.75-13,120.85-2,589.75

Finding the Fourth Proportional to 8,745.75, 13,120.85 and 2,589.75

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Solution

The fourth proportional to 8,745.75, 13,120.85 and 2,589.75 is: 3,885.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.75 : 13,120.85 = 2,589.75 : x
  2. Step 2: Convert to fraction form
    8,745.75/13,120.85 = 2,589.75/x
  3. Step 3: Cross multiply
    8,745.75x = 13,120.85 × 2,589.75
  4. Step 4: Simplify right side
    8,745.75x = 33,979,708.34
  5. Step 5: Solve for x
    x = 33,979,708.34/8,745.75
  6. Step 6: Final answer
    x = 3,885.28

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1.5x scale

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.