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Finding the Fourth Proportional to 8,751.34, 13,118.70 and 3,489.58

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Solution

The fourth proportional to 8,751.34, 13,118.70 and 3,489.58 is: 5,231.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.34 : 13,118.70 = 3,489.58 : x
  2. Step 2: Convert to fraction form
    8,751.34/13,118.70 = 3,489.58/x
  3. Step 3: Cross multiply
    8,751.34x = 13,118.70 × 3,489.58
  4. Step 4: Simplify right side
    8,751.34x = 45,778,782.63
  5. Step 5: Solve for x
    x = 45,778,782.63/8,751.34
  6. Step 6: Final answer
    x = 5,231.06

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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.