Home / 2,913.72-4,020.92-1,587.48

Finding the Fourth Proportional to 2,913.72, 4,020.92 and 1,587.48

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Solution

The fourth proportional to 2,913.72, 4,020.92 and 1,587.48 is: 2,190.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.72 : 4,020.92 = 1,587.48 : x
  2. Step 2: Convert to fraction form
    2,913.72/4,020.92 = 1,587.48/x
  3. Step 3: Cross multiply
    2,913.72x = 4,020.92 × 1,587.48
  4. Step 4: Simplify right side
    2,913.72x = 6,383,128.10
  5. Step 5: Solve for x
    x = 6,383,128.10/2,913.72
  6. Step 6: Final answer
    x = 2,190.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.