Home / 8,619.92-12,936.40-6,317.36

Finding the Fourth Proportional to 8,619.92, 12,936.40 and 6,317.36

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Solution

The fourth proportional to 8,619.92, 12,936.40 and 6,317.36 is: 9,480.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.92 : 12,936.40 = 6,317.36 : x
  2. Step 2: Convert to fraction form
    8,619.92/12,936.40 = 6,317.36/x
  3. Step 3: Cross multiply
    8,619.92x = 12,936.40 × 6,317.36
  4. Step 4: Simplify right side
    8,619.92x = 81,723,895.90
  5. Step 5: Solve for x
    x = 81,723,895.90/8,619.92
  6. Step 6: Final answer
    x = 9,480.82

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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.