Home / 1,722.85-2,379.22-1,472.72

Finding the Fourth Proportional to 1,722.85, 2,379.22 and 1,472.72

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Solution

The fourth proportional to 1,722.85, 2,379.22 and 1,472.72 is: 2,033.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.85 : 2,379.22 = 1,472.72 : x
  2. Step 2: Convert to fraction form
    1,722.85/2,379.22 = 1,472.72/x
  3. Step 3: Cross multiply
    1,722.85x = 2,379.22 × 1,472.72
  4. Step 4: Simplify right side
    1,722.85x = 3,503,909.30
  5. Step 5: Solve for x
    x = 3,503,909.30/1,722.85
  6. Step 6: Final answer
    x = 2,033.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.