Home / 11,078.60-16,612.20-3,286.40

Finding the Fourth Proportional to 11,078.60, 16,612.20 and 3,286.40

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Solution

The fourth proportional to 11,078.60, 16,612.20 and 3,286.40 is: 4,927.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.60 : 16,612.20 = 3,286.40 : x
  2. Step 2: Convert to fraction form
    11,078.60/16,612.20 = 3,286.40/x
  3. Step 3: Cross multiply
    11,078.60x = 16,612.20 × 3,286.40
  4. Step 4: Simplify right side
    11,078.60x = 54,594,334.08
  5. Step 5: Solve for x
    x = 54,594,334.08/11,078.60
  6. Step 6: Final answer
    x = 4,927.91

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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.