Home / 3,281.89-4,529.01-1,789.78

Finding the Fourth Proportional to 3,281.89, 4,529.01 and 1,789.78

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Solution

The fourth proportional to 3,281.89, 4,529.01 and 1,789.78 is: 2,469.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.89 : 4,529.01 = 1,789.78 : x
  2. Step 2: Convert to fraction form
    3,281.89/4,529.01 = 1,789.78/x
  3. Step 3: Cross multiply
    3,281.89x = 4,529.01 × 1,789.78
  4. Step 4: Simplify right side
    3,281.89x = 8,105,931.52
  5. Step 5: Solve for x
    x = 8,105,931.52/3,281.89
  6. Step 6: Final answer
    x = 2,469.90

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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.