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Finding the Fourth Proportional to 8,757.99, 13,137.80 and 3,491.72

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Solution

The fourth proportional to 8,757.99, 13,137.80 and 3,491.72 is: 5,237.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.99 : 13,137.80 = 3,491.72 : x
  2. Step 2: Convert to fraction form
    8,757.99/13,137.80 = 3,491.72/x
  3. Step 3: Cross multiply
    8,757.99x = 13,137.80 × 3,491.72
  4. Step 4: Simplify right side
    8,757.99x = 45,873,519.02
  5. Step 5: Solve for x
    x = 45,873,519.02/8,757.99
  6. Step 6: Final answer
    x = 5,237.90

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1.5x scale

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.