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Finding the Fourth Proportional to 8,618.82, 12,928.14 and 5,696.46

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Solution

The fourth proportional to 8,618.82, 12,928.14 and 5,696.46 is: 8,544.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.82 : 12,928.14 = 5,696.46 : x
  2. Step 2: Convert to fraction form
    8,618.82/12,928.14 = 5,696.46/x
  3. Step 3: Cross multiply
    8,618.82x = 12,928.14 × 5,696.46
  4. Step 4: Simplify right side
    8,618.82x = 73,644,632.38
  5. Step 5: Solve for x
    x = 73,644,632.38/8,618.82
  6. Step 6: Final answer
    x = 8,544.63

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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.