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Finding the Fourth Proportional to 12,882.28, 19,326.78 and 3,648.28

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Solution

The fourth proportional to 12,882.28, 19,326.78 and 3,648.28 is: 5,473.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882.28 : 19,326.78 = 3,648.28 : x
  2. Step 2: Convert to fraction form
    12,882.28/19,326.78 = 3,648.28/x
  3. Step 3: Cross multiply
    12,882.28x = 19,326.78 × 3,648.28
  4. Step 4: Simplify right side
    12,882.28x = 70,509,504.94
  5. Step 5: Solve for x
    x = 70,509,504.94/12,882.28
  6. Step 6: Final answer
    x = 5,473.37

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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.