Home / 1,722.50-2,378.68-1,255.94

Finding the Fourth Proportional to 1,722.50, 2,378.68 and 1,255.94

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Solution

The fourth proportional to 1,722.50, 2,378.68 and 1,255.94 is: 1,734.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.50 : 2,378.68 = 1,255.94 : x
  2. Step 2: Convert to fraction form
    1,722.50/2,378.68 = 1,255.94/x
  3. Step 3: Cross multiply
    1,722.50x = 2,378.68 × 1,255.94
  4. Step 4: Simplify right side
    1,722.50x = 2,987,479.36
  5. Step 5: Solve for x
    x = 2,987,479.36/1,722.50
  6. Step 6: Final answer
    x = 1,734.39

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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.