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Finding the Fourth Proportional to 8,689.31, 13,033.94 and 6,103.79

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Solution

The fourth proportional to 8,689.31, 13,033.94 and 6,103.79 is: 9,155.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.31 : 13,033.94 = 6,103.79 : x
  2. Step 2: Convert to fraction form
    8,689.31/13,033.94 = 6,103.79/x
  3. Step 3: Cross multiply
    8,689.31x = 13,033.94 × 6,103.79
  4. Step 4: Simplify right side
    8,689.31x = 79,556,336.94
  5. Step 5: Solve for x
    x = 79,556,336.94/8,689.31
  6. Step 6: Final answer
    x = 9,155.66

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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.