Home / 8,624.88-12,936.90-2,781.36

Finding the Fourth Proportional to 8,624.88, 12,936.90 and 2,781.36

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Solution

The fourth proportional to 8,624.88, 12,936.90 and 2,781.36 is: 4,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624.88 : 12,936.90 = 2,781.36 : x
  2. Step 2: Convert to fraction form
    8,624.88/12,936.90 = 2,781.36/x
  3. Step 3: Cross multiply
    8,624.88x = 12,936.90 × 2,781.36
  4. Step 4: Simplify right side
    8,624.88x = 35,982,176.18
  5. Step 5: Solve for x
    x = 35,982,176.18/8,624.88
  6. Step 6: Final answer
    x = 4,171.90

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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.