Home / 1,788.49-2,682.81-489.96

Finding the Fourth Proportional to 1,788.49, 2,682.81 and 489.96

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Solution

The fourth proportional to 1,788.49, 2,682.81 and 489.96 is: 734.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.49 : 2,682.81 = 489.96 : x
  2. Step 2: Convert to fraction form
    1,788.49/2,682.81 = 489.96/x
  3. Step 3: Cross multiply
    1,788.49x = 2,682.81 × 489.96
  4. Step 4: Simplify right side
    1,788.49x = 1,314,469.59
  5. Step 5: Solve for x
    x = 1,314,469.59/1,788.49
  6. Step 6: Final answer
    x = 734.96

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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.