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Finding the Fourth Proportional to 8,485.01, 12,731.30 and 3,291.29

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Solution

The fourth proportional to 8,485.01, 12,731.30 and 3,291.29 is: 4,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.01 : 12,731.30 = 3,291.29 : x
  2. Step 2: Convert to fraction form
    8,485.01/12,731.30 = 3,291.29/x
  3. Step 3: Cross multiply
    8,485.01x = 12,731.30 × 3,291.29
  4. Step 4: Simplify right side
    8,485.01x = 41,902,400.38
  5. Step 5: Solve for x
    x = 41,902,400.38/8,485.01
  6. Step 6: Final answer
    x = 4,938.40

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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.