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Finding the Fourth Proportional to 9,422.88, 14,128.79 and 3,579.90

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Solution

The fourth proportional to 9,422.88, 14,128.79 and 3,579.90 is: 5,367.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,422.88 : 14,128.79 = 3,579.90 : x
  2. Step 2: Convert to fraction form
    9,422.88/14,128.79 = 3,579.90/x
  3. Step 3: Cross multiply
    9,422.88x = 14,128.79 × 3,579.90
  4. Step 4: Simplify right side
    9,422.88x = 50,579,637.42
  5. Step 5: Solve for x
    x = 50,579,637.42/9,422.88
  6. Step 6: Final answer
    x = 5,367.75

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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.