Home / 8,418-12,629.62-3,489.96

Finding the Fourth Proportional to 8,418, 12,629.62 and 3,489.96

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Solution

The fourth proportional to 8,418, 12,629.62 and 3,489.96 is: 5,236.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418 : 12,629.62 = 3,489.96 : x
  2. Step 2: Convert to fraction form
    8,418/12,629.62 = 3,489.96/x
  3. Step 3: Cross multiply
    8,418x = 12,629.62 × 3,489.96
  4. Step 4: Simplify right side
    8,418x = 44,076,868.62
  5. Step 5: Solve for x
    x = 44,076,868.62/8,418
  6. Step 6: Final answer
    x = 5,236.03

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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.