Home / 2,408.90-3,609.68-1,789.70

Finding the Fourth Proportional to 2,408.90, 3,609.68 and 1,789.70

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Solution

The fourth proportional to 2,408.90, 3,609.68 and 1,789.70 is: 2,681.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.90 : 3,609.68 = 1,789.70 : x
  2. Step 2: Convert to fraction form
    2,408.90/3,609.68 = 1,789.70/x
  3. Step 3: Cross multiply
    2,408.90x = 3,609.68 × 1,789.70
  4. Step 4: Simplify right side
    2,408.90x = 6,460,217.30
  5. Step 5: Solve for x
    x = 6,460,217.30/2,408.90
  6. Step 6: Final answer
    x = 2,681.82

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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.