Home / 8,469.20-11,687.37-4,640.81

Finding the Fourth Proportional to 8,469.20, 11,687.37 and 4,640.81

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Solution

The fourth proportional to 8,469.20, 11,687.37 and 4,640.81 is: 6,404.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.20 : 11,687.37 = 4,640.81 : x
  2. Step 2: Convert to fraction form
    8,469.20/11,687.37 = 4,640.81/x
  3. Step 3: Cross multiply
    8,469.20x = 11,687.37 × 4,640.81
  4. Step 4: Simplify right side
    8,469.20x = 54,238,863.57
  5. Step 5: Solve for x
    x = 54,238,863.57/8,469.20
  6. Step 6: Final answer
    x = 6,404.25

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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.