Home / 8,628.36-12,930.28-3,936.84

Finding the Fourth Proportional to 8,628.36, 12,930.28 and 3,936.84

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Solution

The fourth proportional to 8,628.36, 12,930.28 and 3,936.84 is: 5,899.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.36 : 12,930.28 = 3,936.84 : x
  2. Step 2: Convert to fraction form
    8,628.36/12,930.28 = 3,936.84/x
  3. Step 3: Cross multiply
    8,628.36x = 12,930.28 × 3,936.84
  4. Step 4: Simplify right side
    8,628.36x = 50,904,443.52
  5. Step 5: Solve for x
    x = 50,904,443.52/8,628.36
  6. Step 6: Final answer
    x = 5,899.67

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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.