Home / 1,722.21-2,583.32-423.69

Finding the Fourth Proportional to 1,722.21, 2,583.32 and 423.69

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Solution

The fourth proportional to 1,722.21, 2,583.32 and 423.69 is: 635.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.21 : 2,583.32 = 423.69 : x
  2. Step 2: Convert to fraction form
    1,722.21/2,583.32 = 423.69/x
  3. Step 3: Cross multiply
    1,722.21x = 2,583.32 × 423.69
  4. Step 4: Simplify right side
    1,722.21x = 1,094,524.73
  5. Step 5: Solve for x
    x = 1,094,524.73/1,722.21
  6. Step 6: Final answer
    x = 635.54

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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.