Home / 3,453.80-5,174.70-3,115.40

Finding the Fourth Proportional to 3,453.80, 5,174.70 and 3,115.40

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Solution

The fourth proportional to 3,453.80, 5,174.70 and 3,115.40 is: 4,667.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.80 : 5,174.70 = 3,115.40 : x
  2. Step 2: Convert to fraction form
    3,453.80/5,174.70 = 3,115.40/x
  3. Step 3: Cross multiply
    3,453.80x = 5,174.70 × 3,115.40
  4. Step 4: Simplify right side
    3,453.80x = 16,121,260.38
  5. Step 5: Solve for x
    x = 16,121,260.38/3,453.80
  6. Step 6: Final answer
    x = 4,667.69

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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.