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Finding the Fourth Proportional to 8,147.89, 11,244.06 and 4,421.89

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Solution

The fourth proportional to 8,147.89, 11,244.06 and 4,421.89 is: 6,102.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.89 : 11,244.06 = 4,421.89 : x
  2. Step 2: Convert to fraction form
    8,147.89/11,244.06 = 4,421.89/x
  3. Step 3: Cross multiply
    8,147.89x = 11,244.06 × 4,421.89
  4. Step 4: Simplify right side
    8,147.89x = 49,719,996.47
  5. Step 5: Solve for x
    x = 49,719,996.47/8,147.89
  6. Step 6: Final answer
    x = 6,102.19

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1.5x scale

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.