Home / 8,679.37-13,019.09-2,105.55

Finding the Fourth Proportional to 8,679.37, 13,019.09 and 2,105.55

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Solution

The fourth proportional to 8,679.37, 13,019.09 and 2,105.55 is: 3,158.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.37 : 13,019.09 = 2,105.55 : x
  2. Step 2: Convert to fraction form
    8,679.37/13,019.09 = 2,105.55/x
  3. Step 3: Cross multiply
    8,679.37x = 13,019.09 × 2,105.55
  4. Step 4: Simplify right side
    8,679.37x = 27,412,334.42
  5. Step 5: Solve for x
    x = 27,412,334.42/8,679.37
  6. Step 6: Final answer
    x = 3,158.33

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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.