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Finding the Fourth Proportional to 8,603.88, 12,905.79 and 2,363.90

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Solution

The fourth proportional to 8,603.88, 12,905.79 and 2,363.90 is: 3,545.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.88 : 12,905.79 = 2,363.90 : x
  2. Step 2: Convert to fraction form
    8,603.88/12,905.79 = 2,363.90/x
  3. Step 3: Cross multiply
    8,603.88x = 12,905.79 × 2,363.90
  4. Step 4: Simplify right side
    8,603.88x = 30,507,923.59
  5. Step 5: Solve for x
    x = 30,507,923.59/8,603.88
  6. Step 6: Final answer
    x = 3,545.83

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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.