Home / 1,722.18-2,583.21-489.57

Finding the Fourth Proportional to 1,722.18, 2,583.21 and 489.57

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Solution

The fourth proportional to 1,722.18, 2,583.21 and 489.57 is: 734.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.18 : 2,583.21 = 489.57 : x
  2. Step 2: Convert to fraction form
    1,722.18/2,583.21 = 489.57/x
  3. Step 3: Cross multiply
    1,722.18x = 2,583.21 × 489.57
  4. Step 4: Simplify right side
    1,722.18x = 1,264,662.12
  5. Step 5: Solve for x
    x = 1,264,662.12/1,722.18
  6. Step 6: Final answer
    x = 734.34

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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.