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Finding the Fourth Proportional to 8,865.44, 13,300.43 and 3,318.86

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Solution

The fourth proportional to 8,865.44, 13,300.43 and 3,318.86 is: 4,979.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.44 : 13,300.43 = 3,318.86 : x
  2. Step 2: Convert to fraction form
    8,865.44/13,300.43 = 3,318.86/x
  3. Step 3: Cross multiply
    8,865.44x = 13,300.43 × 3,318.86
  4. Step 4: Simplify right side
    8,865.44x = 44,142,265.11
  5. Step 5: Solve for x
    x = 44,142,265.11/8,865.44
  6. Step 6: Final answer
    x = 4,979.14

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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.