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Finding the Fourth Proportional to 2,650.86, 3,658.77 and 1,767.02

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Solution

The fourth proportional to 2,650.86, 3,658.77 and 1,767.02 is: 2,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650.86 : 3,658.77 = 1,767.02 : x
  2. Step 2: Convert to fraction form
    2,650.86/3,658.77 = 1,767.02/x
  3. Step 3: Cross multiply
    2,650.86x = 3,658.77 × 1,767.02
  4. Step 4: Simplify right side
    2,650.86x = 6,465,101.47
  5. Step 5: Solve for x
    x = 6,465,101.47/2,650.86
  6. Step 6: Final answer
    x = 2,438.87

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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.