Home / 1,722.18-2,583.04-489.70

Finding the Fourth Proportional to 1,722.18, 2,583.04 and 489.70

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Solution

The fourth proportional to 1,722.18, 2,583.04 and 489.70 is: 734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.18 : 2,583.04 = 489.70 : x
  2. Step 2: Convert to fraction form
    1,722.18/2,583.04 = 489.70/x
  3. Step 3: Cross multiply
    1,722.18x = 2,583.04 × 489.70
  4. Step 4: Simplify right side
    1,722.18x = 1,264,914.69
  5. Step 5: Solve for x
    x = 1,264,914.69/1,722.18
  6. Step 6: Final answer
    x = 734.48

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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.