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Finding the Fourth Proportional to 8,554.60, 12,822.30 and 3,623.40

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Solution

The fourth proportional to 8,554.60, 12,822.30 and 3,623.40 is: 5,431.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,554.60 : 12,822.30 = 3,623.40 : x
  2. Step 2: Convert to fraction form
    8,554.60/12,822.30 = 3,623.40/x
  3. Step 3: Cross multiply
    8,554.60x = 12,822.30 × 3,623.40
  4. Step 4: Simplify right side
    8,554.60x = 46,460,321.82
  5. Step 5: Solve for x
    x = 46,460,321.82/8,554.60
  6. Step 6: Final answer
    x = 5,431.03

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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.