Home / 8,628.94-12,935.68-3,081.49

Finding the Fourth Proportional to 8,628.94, 12,935.68 and 3,081.49

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Solution

The fourth proportional to 8,628.94, 12,935.68 and 3,081.49 is: 4,619.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.94 : 12,935.68 = 3,081.49 : x
  2. Step 2: Convert to fraction form
    8,628.94/12,935.68 = 3,081.49/x
  3. Step 3: Cross multiply
    8,628.94x = 12,935.68 × 3,081.49
  4. Step 4: Simplify right side
    8,628.94x = 39,861,128.52
  5. Step 5: Solve for x
    x = 39,861,128.52/8,628.94
  6. Step 6: Final answer
    x = 4,619.47

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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.