Home / 1,722.18-2,582.94-489.27

Finding the Fourth Proportional to 1,722.18, 2,582.94 and 489.27

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Solution

The fourth proportional to 1,722.18, 2,582.94 and 489.27 is: 733.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.18 : 2,582.94 = 489.27 : x
  2. Step 2: Convert to fraction form
    1,722.18/2,582.94 = 489.27/x
  3. Step 3: Cross multiply
    1,722.18x = 2,582.94 × 489.27
  4. Step 4: Simplify right side
    1,722.18x = 1,263,755.05
  5. Step 5: Solve for x
    x = 1,263,755.05/1,722.18
  6. Step 6: Final answer
    x = 733.81

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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.