Home / 1,720.38-2,579.51-1,170.90

Finding the Fourth Proportional to 1,720.38, 2,579.51 and 1,170.90

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Solution

The fourth proportional to 1,720.38, 2,579.51 and 1,170.90 is: 1,755.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.38 : 2,579.51 = 1,170.90 : x
  2. Step 2: Convert to fraction form
    1,720.38/2,579.51 = 1,170.90/x
  3. Step 3: Cross multiply
    1,720.38x = 2,579.51 × 1,170.90
  4. Step 4: Simplify right side
    1,720.38x = 3,020,351.19
  5. Step 5: Solve for x
    x = 3,020,351.19/1,720.38
  6. Step 6: Final answer
    x = 1,755.63

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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.