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Finding the Fourth Proportional to 6,491.92, 9,739.92 and 2,745.40

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Solution

The fourth proportional to 6,491.92, 9,739.92 and 2,745.40 is: 4,118.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,491.92 : 9,739.92 = 2,745.40 : x
  2. Step 2: Convert to fraction form
    6,491.92/9,739.92 = 2,745.40/x
  3. Step 3: Cross multiply
    6,491.92x = 9,739.92 × 2,745.40
  4. Step 4: Simplify right side
    6,491.92x = 26,739,976.37
  5. Step 5: Solve for x
    x = 26,739,976.37/6,491.92
  6. Step 6: Final answer
    x = 4,118.96

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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.