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Finding the Fourth Proportional to 9,744.40, 14,620.20 and 3,905.20

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Solution

The fourth proportional to 9,744.40, 14,620.20 and 3,905.20 is: 5,859.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,744.40 : 14,620.20 = 3,905.20 : x
  2. Step 2: Convert to fraction form
    9,744.40/14,620.20 = 3,905.20/x
  3. Step 3: Cross multiply
    9,744.40x = 14,620.20 × 3,905.20
  4. Step 4: Simplify right side
    9,744.40x = 57,094,805.04
  5. Step 5: Solve for x
    x = 57,094,805.04/9,744.40
  6. Step 6: Final answer
    x = 5,859.24

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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.