Home / 8,429.88-12,640.18-3,236.28

Finding the Fourth Proportional to 8,429.88, 12,640.18 and 3,236.28

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Solution

The fourth proportional to 8,429.88, 12,640.18 and 3,236.28 is: 4,852.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.88 : 12,640.18 = 3,236.28 : x
  2. Step 2: Convert to fraction form
    8,429.88/12,640.18 = 3,236.28/x
  3. Step 3: Cross multiply
    8,429.88x = 12,640.18 × 3,236.28
  4. Step 4: Simplify right side
    8,429.88x = 40,907,161.73
  5. Step 5: Solve for x
    x = 40,907,161.73/8,429.88
  6. Step 6: Final answer
    x = 4,852.64

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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.