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Finding the Fourth Proportional to 2,486.73, 3,722.79 and 2,179.20

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Solution

The fourth proportional to 2,486.73, 3,722.79 and 2,179.20 is: 3,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.73 : 3,722.79 = 2,179.20 : x
  2. Step 2: Convert to fraction form
    2,486.73/3,722.79 = 2,179.20/x
  3. Step 3: Cross multiply
    2,486.73x = 3,722.79 × 2,179.20
  4. Step 4: Simplify right side
    2,486.73x = 8,112,703.97
  5. Step 5: Solve for x
    x = 8,112,703.97/2,486.73
  6. Step 6: Final answer
    x = 3,262.40

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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.