Home / 8,429.92-12,635.46-3,159.86

Finding the Fourth Proportional to 8,429.92, 12,635.46 and 3,159.86

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Solution

The fourth proportional to 8,429.92, 12,635.46 and 3,159.86 is: 4,736.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.92 : 12,635.46 = 3,159.86 : x
  2. Step 2: Convert to fraction form
    8,429.92/12,635.46 = 3,159.86/x
  3. Step 3: Cross multiply
    8,429.92x = 12,635.46 × 3,159.86
  4. Step 4: Simplify right side
    8,429.92x = 39,926,284.64
  5. Step 5: Solve for x
    x = 39,926,284.64/8,429.92
  6. Step 6: Final answer
    x = 4,736.26

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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.