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Finding the Fourth Proportional to 8,558.60, 12,836.10 and 3,628.40

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Solution

The fourth proportional to 8,558.60, 12,836.10 and 3,628.40 is: 5,441.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,558.60 : 12,836.10 = 3,628.40 : x
  2. Step 2: Convert to fraction form
    8,558.60/12,836.10 = 3,628.40/x
  3. Step 3: Cross multiply
    8,558.60x = 12,836.10 × 3,628.40
  4. Step 4: Simplify right side
    8,558.60x = 46,574,505.24
  5. Step 5: Solve for x
    x = 46,574,505.24/8,558.60
  6. Step 6: Final answer
    x = 5,441.84

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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.