Home / 3,278.09-4,911.65-1,426.43

Finding the Fourth Proportional to 3,278.09, 4,911.65 and 1,426.43

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Solution

The fourth proportional to 3,278.09, 4,911.65 and 1,426.43 is: 2,137.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.09 : 4,911.65 = 1,426.43 : x
  2. Step 2: Convert to fraction form
    3,278.09/4,911.65 = 1,426.43/x
  3. Step 3: Cross multiply
    3,278.09x = 4,911.65 × 1,426.43
  4. Step 4: Simplify right side
    3,278.09x = 7,006,103.92
  5. Step 5: Solve for x
    x = 7,006,103.92/3,278.09
  6. Step 6: Final answer
    x = 2,137.26

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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.