Home / 8,507.20-12,759.67-3,240.79

Finding the Fourth Proportional to 8,507.20, 12,759.67 and 3,240.79

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Solution

The fourth proportional to 8,507.20, 12,759.67 and 3,240.79 is: 4,860.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,507.20 : 12,759.67 = 3,240.79 : x
  2. Step 2: Convert to fraction form
    8,507.20/12,759.67 = 3,240.79/x
  3. Step 3: Cross multiply
    8,507.20x = 12,759.67 × 3,240.79
  4. Step 4: Simplify right side
    8,507.20x = 41,351,410.94
  5. Step 5: Solve for x
    x = 41,351,410.94/8,507.20
  6. Step 6: Final answer
    x = 4,860.75

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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.