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Finding the Fourth Proportional to 6,629.76, 9,930.24 and 6,445.44

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Solution

The fourth proportional to 6,629.76, 9,930.24 and 6,445.44 is: 9,654.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,629.76 : 9,930.24 = 6,445.44 : x
  2. Step 2: Convert to fraction form
    6,629.76/9,930.24 = 6,445.44/x
  3. Step 3: Cross multiply
    6,629.76x = 9,930.24 × 6,445.44
  4. Step 4: Simplify right side
    6,629.76x = 64,004,766.11
  5. Step 5: Solve for x
    x = 64,004,766.11/6,629.76
  6. Step 6: Final answer
    x = 9,654.16

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1.5x scale

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.