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Finding the Fourth Proportional to 8,962.80, 13,441.80 and 3,118.80

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Solution

The fourth proportional to 8,962.80, 13,441.80 and 3,118.80 is: 4,677.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,962.80 : 13,441.80 = 3,118.80 : x
  2. Step 2: Convert to fraction form
    8,962.80/13,441.80 = 3,118.80/x
  3. Step 3: Cross multiply
    8,962.80x = 13,441.80 × 3,118.80
  4. Step 4: Simplify right side
    8,962.80x = 41,922,285.84
  5. Step 5: Solve for x
    x = 41,922,285.84/8,962.80
  6. Step 6: Final answer
    x = 4,677.36

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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.