Home / 8,329.40-12,489.78-3,134.60

Finding the Fourth Proportional to 8,329.40, 12,489.78 and 3,134.60

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Solution

The fourth proportional to 8,329.40, 12,489.78 and 3,134.60 is: 4,700.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,329.40 : 12,489.78 = 3,134.60 : x
  2. Step 2: Convert to fraction form
    8,329.40/12,489.78 = 3,134.60/x
  3. Step 3: Cross multiply
    8,329.40x = 12,489.78 × 3,134.60
  4. Step 4: Simplify right side
    8,329.40x = 39,150,464.39
  5. Step 5: Solve for x
    x = 39,150,464.39/8,329.40
  6. Step 6: Final answer
    x = 4,700.27

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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.