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Finding the Fourth Proportional to 5,629.92, 8,442.72 and 2,709.60

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Solution

The fourth proportional to 5,629.92, 8,442.72 and 2,709.60 is: 4,063.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,629.92 : 8,442.72 = 2,709.60 : x
  2. Step 2: Convert to fraction form
    5,629.92/8,442.72 = 2,709.60/x
  3. Step 3: Cross multiply
    5,629.92x = 8,442.72 × 2,709.60
  4. Step 4: Simplify right side
    5,629.92x = 22,876,394.11
  5. Step 5: Solve for x
    x = 22,876,394.11/5,629.92
  6. Step 6: Final answer
    x = 4,063.36

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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.