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Finding the Fourth Proportional to 6,440.64, 9,662.64 and 1,823.64

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Solution

The fourth proportional to 6,440.64, 9,662.64 and 1,823.64 is: 2,735.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,440.64 : 9,662.64 = 1,823.64 : x
  2. Step 2: Convert to fraction form
    6,440.64/9,662.64 = 1,823.64/x
  3. Step 3: Cross multiply
    6,440.64x = 9,662.64 × 1,823.64
  4. Step 4: Simplify right side
    6,440.64x = 17,621,176.81
  5. Step 5: Solve for x
    x = 17,621,176.81/6,440.64
  6. Step 6: Final answer
    x = 2,735.94

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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.