Home / 1,722.10-2,580.82-1,257.70

Finding the Fourth Proportional to 1,722.10, 2,580.82 and 1,257.70

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Solution

The fourth proportional to 1,722.10, 2,580.82 and 1,257.70 is: 1,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.10 : 2,580.82 = 1,257.70 : x
  2. Step 2: Convert to fraction form
    1,722.10/2,580.82 = 1,257.70/x
  3. Step 3: Cross multiply
    1,722.10x = 2,580.82 × 1,257.70
  4. Step 4: Simplify right side
    1,722.10x = 3,245,887.72
  5. Step 5: Solve for x
    x = 3,245,887.72/1,722.10
  6. Step 6: Final answer
    x = 1,884.85

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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.