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Finding the Fourth Proportional to 3,778.15, 5,662.21 and 1,697.77

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Solution

The fourth proportional to 3,778.15, 5,662.21 and 1,697.77 is: 2,544.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.15 : 5,662.21 = 1,697.77 : x
  2. Step 2: Convert to fraction form
    3,778.15/5,662.21 = 1,697.77/x
  3. Step 3: Cross multiply
    3,778.15x = 5,662.21 × 1,697.77
  4. Step 4: Simplify right side
    3,778.15x = 9,613,101.96
  5. Step 5: Solve for x
    x = 9,613,101.96/3,778.15
  6. Step 6: Final answer
    x = 2,544.39

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1.5x scale

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.