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Finding the Fourth Proportional to 8,682.60, 13,021.08 and 3,749.16

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Solution

The fourth proportional to 8,682.60, 13,021.08 and 3,749.16 is: 5,622.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.60 : 13,021.08 = 3,749.16 : x
  2. Step 2: Convert to fraction form
    8,682.60/13,021.08 = 3,749.16/x
  3. Step 3: Cross multiply
    8,682.60x = 13,021.08 × 3,749.16
  4. Step 4: Simplify right side
    8,682.60x = 48,818,112.29
  5. Step 5: Solve for x
    x = 48,818,112.29/8,682.60
  6. Step 6: Final answer
    x = 5,622.52

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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.