Home / 8,417.24-12,629.10-3,221.90

Finding the Fourth Proportional to 8,417.24, 12,629.10 and 3,221.90

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Solution

The fourth proportional to 8,417.24, 12,629.10 and 3,221.90 is: 4,834.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,417.24 : 12,629.10 = 3,221.90 : x
  2. Step 2: Convert to fraction form
    8,417.24/12,629.10 = 3,221.90/x
  3. Step 3: Cross multiply
    8,417.24x = 12,629.10 × 3,221.90
  4. Step 4: Simplify right side
    8,417.24x = 40,689,634.14
  5. Step 5: Solve for x
    x = 40,689,634.14/8,417.24
  6. Step 6: Final answer
    x = 4,834.09

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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.