Home / 8,418.04-12,629.46-3,421.96

Finding the Fourth Proportional to 8,418.04, 12,629.46 and 3,421.96

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Solution

The fourth proportional to 8,418.04, 12,629.46 and 3,421.96 is: 5,133.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.04 : 12,629.46 = 3,421.96 : x
  2. Step 2: Convert to fraction form
    8,418.04/12,629.46 = 3,421.96/x
  3. Step 3: Cross multiply
    8,418.04x = 12,629.46 × 3,421.96
  4. Step 4: Simplify right side
    8,418.04x = 43,217,506.94
  5. Step 5: Solve for x
    x = 43,217,506.94/8,418.04
  6. Step 6: Final answer
    x = 5,133.92

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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.