Home / 3,971.12-5,956.08-2,781.54

Finding the Fourth Proportional to 3,971.12, 5,956.08 and 2,781.54

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Solution

The fourth proportional to 3,971.12, 5,956.08 and 2,781.54 is: 4,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.12 : 5,956.08 = 2,781.54 : x
  2. Step 2: Convert to fraction form
    3,971.12/5,956.08 = 2,781.54/x
  3. Step 3: Cross multiply
    3,971.12x = 5,956.08 × 2,781.54
  4. Step 4: Simplify right side
    3,971.12x = 16,567,074.76
  5. Step 5: Solve for x
    x = 16,567,074.76/3,971.12
  6. Step 6: Final answer
    x = 4,171.89

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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.