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Finding the Fourth Proportional to 2,600.57, 3,587.73 and 1,890.86

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Solution

The fourth proportional to 2,600.57, 3,587.73 and 1,890.86 is: 2,608.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.57 : 3,587.73 = 1,890.86 : x
  2. Step 2: Convert to fraction form
    2,600.57/3,587.73 = 1,890.86/x
  3. Step 3: Cross multiply
    2,600.57x = 3,587.73 × 1,890.86
  4. Step 4: Simplify right side
    2,600.57x = 6,783,890.30
  5. Step 5: Solve for x
    x = 6,783,890.30/2,600.57
  6. Step 6: Final answer
    x = 2,608.61

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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.