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Finding the Fourth Proportional to 8,984.36, 12,399 and 6,185

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Solution

The fourth proportional to 8,984.36, 12,399 and 6,185 is: 8,535.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,984.36 : 12,399 = 6,185 : x
  2. Step 2: Convert to fraction form
    8,984.36/12,399 = 6,185/x
  3. Step 3: Cross multiply
    8,984.36x = 12,399 × 6,185
  4. Step 4: Simplify right side
    8,984.36x = 76,687,815
  5. Step 5: Solve for x
    x = 76,687,815/8,984.36
  6. Step 6: Final answer
    x = 8,535.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.