Home / 1,722.13-2,583.21-489.55

Finding the Fourth Proportional to 1,722.13, 2,583.21 and 489.55

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Solution

The fourth proportional to 1,722.13, 2,583.21 and 489.55 is: 734.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.13 : 2,583.21 = 489.55 : x
  2. Step 2: Convert to fraction form
    1,722.13/2,583.21 = 489.55/x
  3. Step 3: Cross multiply
    1,722.13x = 2,583.21 × 489.55
  4. Step 4: Simplify right side
    1,722.13x = 1,264,610.46
  5. Step 5: Solve for x
    x = 1,264,610.46/1,722.13
  6. Step 6: Final answer
    x = 734.33

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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.