Home / 8,147.24-12,240.43-5,231.24

Finding the Fourth Proportional to 8,147.24, 12,240.43 and 5,231.24

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Solution

The fourth proportional to 8,147.24, 12,240.43 and 5,231.24 is: 7,859.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.24 : 12,240.43 = 5,231.24 : x
  2. Step 2: Convert to fraction form
    8,147.24/12,240.43 = 5,231.24/x
  3. Step 3: Cross multiply
    8,147.24x = 12,240.43 × 5,231.24
  4. Step 4: Simplify right side
    8,147.24x = 64,032,600.88
  5. Step 5: Solve for x
    x = 64,032,600.88/8,147.24
  6. Step 6: Final answer
    x = 7,859.42

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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.