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Finding the Fourth Proportional to 8,487.34, 12,717.99 and 3,554.28

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Solution

The fourth proportional to 8,487.34, 12,717.99 and 3,554.28 is: 5,325.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.34 : 12,717.99 = 3,554.28 : x
  2. Step 2: Convert to fraction form
    8,487.34/12,717.99 = 3,554.28/x
  3. Step 3: Cross multiply
    8,487.34x = 12,717.99 × 3,554.28
  4. Step 4: Simplify right side
    8,487.34x = 45,203,297.50
  5. Step 5: Solve for x
    x = 45,203,297.50/8,487.34
  6. Step 6: Final answer
    x = 5,325.97

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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.