Home / 8,288.96-12,429.12-3,905.12

Finding the Fourth Proportional to 8,288.96, 12,429.12 and 3,905.12

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Solution

The fourth proportional to 8,288.96, 12,429.12 and 3,905.12 is: 5,855.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,288.96 : 12,429.12 = 3,905.12 : x
  2. Step 2: Convert to fraction form
    8,288.96/12,429.12 = 3,905.12/x
  3. Step 3: Cross multiply
    8,288.96x = 12,429.12 × 3,905.12
  4. Step 4: Simplify right side
    8,288.96x = 48,537,205.09
  5. Step 5: Solve for x
    x = 48,537,205.09/8,288.96
  6. Step 6: Final answer
    x = 5,855.64

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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.