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Finding the Fourth Proportional to 3,842.40, 5,760.72 and 1,532.64

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Solution

The fourth proportional to 3,842.40, 5,760.72 and 1,532.64 is: 2,297.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,842.40 : 5,760.72 = 1,532.64 : x
  2. Step 2: Convert to fraction form
    3,842.40/5,760.72 = 1,532.64/x
  3. Step 3: Cross multiply
    3,842.40x = 5,760.72 × 1,532.64
  4. Step 4: Simplify right side
    3,842.40x = 8,829,109.90
  5. Step 5: Solve for x
    x = 8,829,109.90/3,842.40
  6. Step 6: Final answer
    x = 2,297.81

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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.