Home / 8,429.40-12,640.86-3,235.68

Finding the Fourth Proportional to 8,429.40, 12,640.86 and 3,235.68

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Solution

The fourth proportional to 8,429.40, 12,640.86 and 3,235.68 is: 4,852.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.40 : 12,640.86 = 3,235.68 : x
  2. Step 2: Convert to fraction form
    8,429.40/12,640.86 = 3,235.68/x
  3. Step 3: Cross multiply
    8,429.40x = 12,640.86 × 3,235.68
  4. Step 4: Simplify right side
    8,429.40x = 40,901,777.88
  5. Step 5: Solve for x
    x = 40,901,777.88/8,429.40
  6. Step 6: Final answer
    x = 4,852.28

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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.