Home / 8,961.78-13,448.08-3,122.49

Finding the Fourth Proportional to 8,961.78, 13,448.08 and 3,122.49

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Solution

The fourth proportional to 8,961.78, 13,448.08 and 3,122.49 is: 4,685.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.78 : 13,448.08 = 3,122.49 : x
  2. Step 2: Convert to fraction form
    8,961.78/13,448.08 = 3,122.49/x
  3. Step 3: Cross multiply
    8,961.78x = 13,448.08 × 3,122.49
  4. Step 4: Simplify right side
    8,961.78x = 41,991,549.65
  5. Step 5: Solve for x
    x = 41,991,549.65/8,961.78
  6. Step 6: Final answer
    x = 4,685.62

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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.