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Finding the Fourth Proportional to 3,508.75, 4,842.15 and 1,936.75

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Solution

The fourth proportional to 3,508.75, 4,842.15 and 1,936.75 is: 2,672.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,508.75 : 4,842.15 = 1,936.75 : x
  2. Step 2: Convert to fraction form
    3,508.75/4,842.15 = 1,936.75/x
  3. Step 3: Cross multiply
    3,508.75x = 4,842.15 × 1,936.75
  4. Step 4: Simplify right side
    3,508.75x = 9,378,034.01
  5. Step 5: Solve for x
    x = 9,378,034.01/3,508.75
  6. Step 6: Final answer
    x = 2,672.76

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1.5x scale

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.