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Finding the Fourth Proportional to 4,788.13, 7,182.74 and 2,190.73

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Solution

The fourth proportional to 4,788.13, 7,182.74 and 2,190.73 is: 3,286.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,788.13 : 7,182.74 = 2,190.73 : x
  2. Step 2: Convert to fraction form
    4,788.13/7,182.74 = 2,190.73/x
  3. Step 3: Cross multiply
    4,788.13x = 7,182.74 × 2,190.73
  4. Step 4: Simplify right side
    4,788.13x = 15,735,444.00
  5. Step 5: Solve for x
    x = 15,735,444.00/4,788.13
  6. Step 6: Final answer
    x = 3,286.34

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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.