Home / 1,722.08-2,580.78-1,257.68

Finding the Fourth Proportional to 1,722.08, 2,580.78 and 1,257.68

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Solution

The fourth proportional to 1,722.08, 2,580.78 and 1,257.68 is: 1,884.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.08 : 2,580.78 = 1,257.68 : x
  2. Step 2: Convert to fraction form
    1,722.08/2,580.78 = 1,257.68/x
  3. Step 3: Cross multiply
    1,722.08x = 2,580.78 × 1,257.68
  4. Step 4: Simplify right side
    1,722.08x = 3,245,795.39
  5. Step 5: Solve for x
    x = 3,245,795.39/1,722.08
  6. Step 6: Final answer
    x = 1,884.81

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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.