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Finding the Fourth Proportional to 3,188.73, 4,784.91 and 1,728.90

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Solution

The fourth proportional to 3,188.73, 4,784.91 and 1,728.90 is: 2,594.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.73 : 4,784.91 = 1,728.90 : x
  2. Step 2: Convert to fraction form
    3,188.73/4,784.91 = 1,728.90/x
  3. Step 3: Cross multiply
    3,188.73x = 4,784.91 × 1,728.90
  4. Step 4: Simplify right side
    3,188.73x = 8,272,630.90
  5. Step 5: Solve for x
    x = 8,272,630.90/3,188.73
  6. Step 6: Final answer
    x = 2,594.33

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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.