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Finding the Fourth Proportional to 9,891.57, 13,650.36 and 6,747.75

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Solution

The fourth proportional to 9,891.57, 13,650.36 and 6,747.75 is: 9,311.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,891.57 : 13,650.36 = 6,747.75 : x
  2. Step 2: Convert to fraction form
    9,891.57/13,650.36 = 6,747.75/x
  3. Step 3: Cross multiply
    9,891.57x = 13,650.36 × 6,747.75
  4. Step 4: Simplify right side
    9,891.57x = 92,109,216.69
  5. Step 5: Solve for x
    x = 92,109,216.69/9,891.57
  6. Step 6: Final answer
    x = 9,311.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.