Home / 3,921.69-5,412.11-2,349.75

Finding the Fourth Proportional to 3,921.69, 5,412.11 and 2,349.75

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Solution

The fourth proportional to 3,921.69, 5,412.11 and 2,349.75 is: 3,242.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.69 : 5,412.11 = 2,349.75 : x
  2. Step 2: Convert to fraction form
    3,921.69/5,412.11 = 2,349.75/x
  3. Step 3: Cross multiply
    3,921.69x = 5,412.11 × 2,349.75
  4. Step 4: Simplify right side
    3,921.69x = 12,717,093.72
  5. Step 5: Solve for x
    x = 12,717,093.72/3,921.69
  6. Step 6: Final answer
    x = 3,242.76

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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.