Home / 1,720.91-2,578.04-1,028.13

Finding the Fourth Proportional to 1,720.91, 2,578.04 and 1,028.13

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Solution

The fourth proportional to 1,720.91, 2,578.04 and 1,028.13 is: 1,540.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.91 : 2,578.04 = 1,028.13 : x
  2. Step 2: Convert to fraction form
    1,720.91/2,578.04 = 1,028.13/x
  3. Step 3: Cross multiply
    1,720.91x = 2,578.04 × 1,028.13
  4. Step 4: Simplify right side
    1,720.91x = 2,650,549.31
  5. Step 5: Solve for x
    x = 2,650,549.31/1,720.91
  6. Step 6: Final answer
    x = 1,540.21

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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.