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Finding the Fourth Proportional to 1,992.60, 2,750.13 and 1,246.86

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Solution

The fourth proportional to 1,992.60, 2,750.13 and 1,246.86 is: 1,720.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.60 : 2,750.13 = 1,246.86 : x
  2. Step 2: Convert to fraction form
    1,992.60/2,750.13 = 1,246.86/x
  3. Step 3: Cross multiply
    1,992.60x = 2,750.13 × 1,246.86
  4. Step 4: Simplify right side
    1,992.60x = 3,429,027.09
  5. Step 5: Solve for x
    x = 3,429,027.09/1,992.60
  6. Step 6: Final answer
    x = 1,720.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.