Home / 8,745.30-13,122.75-4,128.18

Finding the Fourth Proportional to 8,745.30, 13,122.75 and 4,128.18

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Solution

The fourth proportional to 8,745.30, 13,122.75 and 4,128.18 is: 6,194.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.30 : 13,122.75 = 4,128.18 : x
  2. Step 2: Convert to fraction form
    8,745.30/13,122.75 = 4,128.18/x
  3. Step 3: Cross multiply
    8,745.30x = 13,122.75 × 4,128.18
  4. Step 4: Simplify right side
    8,745.30x = 54,173,074.10
  5. Step 5: Solve for x
    x = 54,173,074.10/8,745.30
  6. Step 6: Final answer
    x = 6,194.54

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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.