Home / 2,629.72-3,939.45-1,531.80

Finding the Fourth Proportional to 2,629.72, 3,939.45 and 1,531.80

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Solution

The fourth proportional to 2,629.72, 3,939.45 and 1,531.80 is: 2,294.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.72 : 3,939.45 = 1,531.80 : x
  2. Step 2: Convert to fraction form
    2,629.72/3,939.45 = 1,531.80/x
  3. Step 3: Cross multiply
    2,629.72x = 3,939.45 × 1,531.80
  4. Step 4: Simplify right side
    2,629.72x = 6,034,449.51
  5. Step 5: Solve for x
    x = 6,034,449.51/2,629.72
  6. Step 6: Final answer
    x = 2,294.71

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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.