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Finding the Fourth Proportional to 8,662.28, 12,972.60 and 4,953.26

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Solution

The fourth proportional to 8,662.28, 12,972.60 and 4,953.26 is: 7,417.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.28 : 12,972.60 = 4,953.26 : x
  2. Step 2: Convert to fraction form
    8,662.28/12,972.60 = 4,953.26/x
  3. Step 3: Cross multiply
    8,662.28x = 12,972.60 × 4,953.26
  4. Step 4: Simplify right side
    8,662.28x = 64,256,660.68
  5. Step 5: Solve for x
    x = 64,256,660.68/8,662.28
  6. Step 6: Final answer
    x = 7,417.98

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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.