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Finding the Fourth Proportional to 8,609.79, 11,883.50 and 5,620.35

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Solution

The fourth proportional to 8,609.79, 11,883.50 and 5,620.35 is: 7,757.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.79 : 11,883.50 = 5,620.35 : x
  2. Step 2: Convert to fraction form
    8,609.79/11,883.50 = 5,620.35/x
  3. Step 3: Cross multiply
    8,609.79x = 11,883.50 × 5,620.35
  4. Step 4: Simplify right side
    8,609.79x = 66,789,401.12
  5. Step 5: Solve for x
    x = 66,789,401.12/8,609.79
  6. Step 6: Final answer
    x = 7,757.38

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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.