Home / 8,628.20-12,942.36-3,693.68

Finding the Fourth Proportional to 8,628.20, 12,942.36 and 3,693.68

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Solution

The fourth proportional to 8,628.20, 12,942.36 and 3,693.68 is: 5,540.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.20 : 12,942.36 = 3,693.68 : x
  2. Step 2: Convert to fraction form
    8,628.20/12,942.36 = 3,693.68/x
  3. Step 3: Cross multiply
    8,628.20x = 12,942.36 × 3,693.68
  4. Step 4: Simplify right side
    8,628.20x = 47,804,936.28
  5. Step 5: Solve for x
    x = 47,804,936.28/8,628.20
  6. Step 6: Final answer
    x = 5,540.55

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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.