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Finding the Fourth Proportional to 8,308.97, 12,414.79 and 8,018.28

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Solution

The fourth proportional to 8,308.97, 12,414.79 and 8,018.28 is: 11,980.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308.97 : 12,414.79 = 8,018.28 : x
  2. Step 2: Convert to fraction form
    8,308.97/12,414.79 = 8,018.28/x
  3. Step 3: Cross multiply
    8,308.97x = 12,414.79 × 8,018.28
  4. Step 4: Simplify right side
    8,308.97x = 99,545,277.48
  5. Step 5: Solve for x
    x = 99,545,277.48/8,308.97
  6. Step 6: Final answer
    x = 11,980.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.