Home / 8,426.90-12,639.04-3,231.56

Finding the Fourth Proportional to 8,426.90, 12,639.04 and 3,231.56

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Solution

The fourth proportional to 8,426.90, 12,639.04 and 3,231.56 is: 4,846.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,426.90 : 12,639.04 = 3,231.56 : x
  2. Step 2: Convert to fraction form
    8,426.90/12,639.04 = 3,231.56/x
  3. Step 3: Cross multiply
    8,426.90x = 12,639.04 × 3,231.56
  4. Step 4: Simplify right side
    8,426.90x = 40,843,839.62
  5. Step 5: Solve for x
    x = 40,843,839.62/8,426.90
  6. Step 6: Final answer
    x = 4,846.84

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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.