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Finding the Fourth Proportional to 8,905.72, 13,358.94 and 3,358.48

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Solution

The fourth proportional to 8,905.72, 13,358.94 and 3,358.48 is: 5,037.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.72 : 13,358.94 = 3,358.48 : x
  2. Step 2: Convert to fraction form
    8,905.72/13,358.94 = 3,358.48/x
  3. Step 3: Cross multiply
    8,905.72x = 13,358.94 × 3,358.48
  4. Step 4: Simplify right side
    8,905.72x = 44,865,732.81
  5. Step 5: Solve for x
    x = 44,865,732.81/8,905.72
  6. Step 6: Final answer
    x = 5,037.86

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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.