Home / 8,257.25-12,385.92-2,101.25

Finding the Fourth Proportional to 8,257.25, 12,385.92 and 2,101.25

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Solution

The fourth proportional to 8,257.25, 12,385.92 and 2,101.25 is: 3,151.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257.25 : 12,385.92 = 2,101.25 : x
  2. Step 2: Convert to fraction form
    8,257.25/12,385.92 = 2,101.25/x
  3. Step 3: Cross multiply
    8,257.25x = 12,385.92 × 2,101.25
  4. Step 4: Simplify right side
    8,257.25x = 26,025,914.40
  5. Step 5: Solve for x
    x = 26,025,914.40/8,257.25
  6. Step 6: Final answer
    x = 3,151.89

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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.