Home / 8,639.25-12,961.94-4,259.81

Finding the Fourth Proportional to 8,639.25, 12,961.94 and 4,259.81

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Solution

The fourth proportional to 8,639.25, 12,961.94 and 4,259.81 is: 6,391.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.25 : 12,961.94 = 4,259.81 : x
  2. Step 2: Convert to fraction form
    8,639.25/12,961.94 = 4,259.81/x
  3. Step 3: Cross multiply
    8,639.25x = 12,961.94 × 4,259.81
  4. Step 4: Simplify right side
    8,639.25x = 55,215,315.52
  5. Step 5: Solve for x
    x = 55,215,315.52/8,639.25
  6. Step 6: Final answer
    x = 6,391.22

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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.