Home / 8,155.68-12,226.59-3,228.78

Finding the Fourth Proportional to 8,155.68, 12,226.59 and 3,228.78

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Solution

The fourth proportional to 8,155.68, 12,226.59 and 3,228.78 is: 4,840.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.68 : 12,226.59 = 3,228.78 : x
  2. Step 2: Convert to fraction form
    8,155.68/12,226.59 = 3,228.78/x
  3. Step 3: Cross multiply
    8,155.68x = 12,226.59 × 3,228.78
  4. Step 4: Simplify right side
    8,155.68x = 39,476,969.26
  5. Step 5: Solve for x
    x = 39,476,969.26/8,155.68
  6. Step 6: Final answer
    x = 4,840.43

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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.