Home / 1,720.53-2,575.32-1,231.19

Finding the Fourth Proportional to 1,720.53, 2,575.32 and 1,231.19

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Solution

The fourth proportional to 1,720.53, 2,575.32 and 1,231.19 is: 1,842.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.53 : 2,575.32 = 1,231.19 : x
  2. Step 2: Convert to fraction form
    1,720.53/2,575.32 = 1,231.19/x
  3. Step 3: Cross multiply
    1,720.53x = 2,575.32 × 1,231.19
  4. Step 4: Simplify right side
    1,720.53x = 3,170,708.23
  5. Step 5: Solve for x
    x = 3,170,708.23/1,720.53
  6. Step 6: Final answer
    x = 1,842.87

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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.