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Finding the Fourth Proportional to 4,786.14, 7,179.20 and 2,187.25

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Solution

The fourth proportional to 4,786.14, 7,179.20 and 2,187.25 is: 3,280.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.14 : 7,179.20 = 2,187.25 : x
  2. Step 2: Convert to fraction form
    4,786.14/7,179.20 = 2,187.25/x
  3. Step 3: Cross multiply
    4,786.14x = 7,179.20 × 2,187.25
  4. Step 4: Simplify right side
    4,786.14x = 15,702,710.67
  5. Step 5: Solve for x
    x = 15,702,710.67/4,786.14
  6. Step 6: Final answer
    x = 3,280.88

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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.