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Finding the Fourth Proportional to 8,812.10, 13,214.72 and 4,426.50

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Solution

The fourth proportional to 8,812.10, 13,214.72 and 4,426.50 is: 6,638.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.10 : 13,214.72 = 4,426.50 : x
  2. Step 2: Convert to fraction form
    8,812.10/13,214.72 = 4,426.50/x
  3. Step 3: Cross multiply
    8,812.10x = 13,214.72 × 4,426.50
  4. Step 4: Simplify right side
    8,812.10x = 58,494,958.08
  5. Step 5: Solve for x
    x = 58,494,958.08/8,812.10
  6. Step 6: Final answer
    x = 6,638.03

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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.