Home / 3,122.51-4,680.77-1,147.68

Finding the Fourth Proportional to 3,122.51, 4,680.77 and 1,147.68

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Solution

The fourth proportional to 3,122.51, 4,680.77 and 1,147.68 is: 1,720.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.51 : 4,680.77 = 1,147.68 : x
  2. Step 2: Convert to fraction form
    3,122.51/4,680.77 = 1,147.68/x
  3. Step 3: Cross multiply
    3,122.51x = 4,680.77 × 1,147.68
  4. Step 4: Simplify right side
    3,122.51x = 5,372,020.38
  5. Step 5: Solve for x
    x = 5,372,020.38/3,122.51
  6. Step 6: Final answer
    x = 1,720.42

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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.