Home / 1,720.57-2,581.32-1,227.60

Finding the Fourth Proportional to 1,720.57, 2,581.32 and 1,227.60

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Solution

The fourth proportional to 1,720.57, 2,581.32 and 1,227.60 is: 1,841.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.57 : 2,581.32 = 1,227.60 : x
  2. Step 2: Convert to fraction form
    1,720.57/2,581.32 = 1,227.60/x
  3. Step 3: Cross multiply
    1,720.57x = 2,581.32 × 1,227.60
  4. Step 4: Simplify right side
    1,720.57x = 3,168,828.43
  5. Step 5: Solve for x
    x = 3,168,828.43/1,720.57
  6. Step 6: Final answer
    x = 1,841.73

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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.