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Finding the Fourth Proportional to 3,293.28, 4,939.94 and 1,345.68

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Solution

The fourth proportional to 3,293.28, 4,939.94 and 1,345.68 is: 2,018.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,293.28 : 4,939.94 = 1,345.68 : x
  2. Step 2: Convert to fraction form
    3,293.28/4,939.94 = 1,345.68/x
  3. Step 3: Cross multiply
    3,293.28x = 4,939.94 × 1,345.68
  4. Step 4: Simplify right side
    3,293.28x = 6,647,578.46
  5. Step 5: Solve for x
    x = 6,647,578.46/3,293.28
  6. Step 6: Final answer
    x = 2,018.53

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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.