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Finding the Fourth Proportional to 6,446.71, 9,660.94 and 2,745.21

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Solution

The fourth proportional to 6,446.71, 9,660.94 and 2,745.21 is: 4,113.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,446.71 : 9,660.94 = 2,745.21 : x
  2. Step 2: Convert to fraction form
    6,446.71/9,660.94 = 2,745.21/x
  3. Step 3: Cross multiply
    6,446.71x = 9,660.94 × 2,745.21
  4. Step 4: Simplify right side
    6,446.71x = 26,521,309.10
  5. Step 5: Solve for x
    x = 26,521,309.10/6,446.71
  6. Step 6: Final answer
    x = 4,113.93

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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.