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Finding the Fourth Proportional to 3,174.39, 4,372.79 and 3,018.87

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Solution

The fourth proportional to 3,174.39, 4,372.79 and 3,018.87 is: 4,158.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,174.39 : 4,372.79 = 3,018.87 : x
  2. Step 2: Convert to fraction form
    3,174.39/4,372.79 = 3,018.87/x
  3. Step 3: Cross multiply
    3,174.39x = 4,372.79 × 3,018.87
  4. Step 4: Simplify right side
    3,174.39x = 13,200,869.45
  5. Step 5: Solve for x
    x = 13,200,869.45/3,174.39
  6. Step 6: Final answer
    x = 4,158.55

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1.5x scale

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.