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Finding the Fourth Proportional to 8,489.56, 12,717.06 and 3,858.52

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Solution

The fourth proportional to 8,489.56, 12,717.06 and 3,858.52 is: 5,779.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.56 : 12,717.06 = 3,858.52 : x
  2. Step 2: Convert to fraction form
    8,489.56/12,717.06 = 3,858.52/x
  3. Step 3: Cross multiply
    8,489.56x = 12,717.06 × 3,858.52
  4. Step 4: Simplify right side
    8,489.56x = 49,069,030.35
  5. Step 5: Solve for x
    x = 49,069,030.35/8,489.56
  6. Step 6: Final answer
    x = 5,779.93

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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.