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Finding the Fourth Proportional to 8,757.65, 13,137.30 and 3,491.39

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Solution

The fourth proportional to 8,757.65, 13,137.30 and 3,491.39 is: 5,237.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.65 : 13,137.30 = 3,491.39 : x
  2. Step 2: Convert to fraction form
    8,757.65/13,137.30 = 3,491.39/x
  3. Step 3: Cross multiply
    8,757.65x = 13,137.30 × 3,491.39
  4. Step 4: Simplify right side
    8,757.65x = 45,867,437.85
  5. Step 5: Solve for x
    x = 45,867,437.85/8,757.65
  6. Step 6: Final answer
    x = 5,237.41

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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.