Home / 3,205.78-4,423.29-1,947.50

Finding the Fourth Proportional to 3,205.78, 4,423.29 and 1,947.50

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Solution

The fourth proportional to 3,205.78, 4,423.29 and 1,947.50 is: 2,687.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.78 : 4,423.29 = 1,947.50 : x
  2. Step 2: Convert to fraction form
    3,205.78/4,423.29 = 1,947.50/x
  3. Step 3: Cross multiply
    3,205.78x = 4,423.29 × 1,947.50
  4. Step 4: Simplify right side
    3,205.78x = 8,614,357.28
  5. Step 5: Solve for x
    x = 8,614,357.28/3,205.78
  6. Step 6: Final answer
    x = 2,687.13

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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.