Home / 3,309.78-4,965.57-2,947.08

Finding the Fourth Proportional to 3,309.78, 4,965.57 and 2,947.08

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Solution

The fourth proportional to 3,309.78, 4,965.57 and 2,947.08 is: 4,421.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309.78 : 4,965.57 = 2,947.08 : x
  2. Step 2: Convert to fraction form
    3,309.78/4,965.57 = 2,947.08/x
  3. Step 3: Cross multiply
    3,309.78x = 4,965.57 × 2,947.08
  4. Step 4: Simplify right side
    3,309.78x = 14,633,932.04
  5. Step 5: Solve for x
    x = 14,633,932.04/3,309.78
  6. Step 6: Final answer
    x = 4,421.42

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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.