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Finding the Fourth Proportional to 3,980.95, 5,944.39 and 3,149.89

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Solution

The fourth proportional to 3,980.95, 5,944.39 and 3,149.89 is: 4,703.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.95 : 5,944.39 = 3,149.89 : x
  2. Step 2: Convert to fraction form
    3,980.95/5,944.39 = 3,149.89/x
  3. Step 3: Cross multiply
    3,980.95x = 5,944.39 × 3,149.89
  4. Step 4: Simplify right side
    3,980.95x = 18,724,151.88
  5. Step 5: Solve for x
    x = 18,724,151.88/3,980.95
  6. Step 6: Final answer
    x = 4,703.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.