Home / 3,191.29-4,781.70-1,956.08

Finding the Fourth Proportional to 3,191.29, 4,781.70 and 1,956.08

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Solution

The fourth proportional to 3,191.29, 4,781.70 and 1,956.08 is: 2,930.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.29 : 4,781.70 = 1,956.08 : x
  2. Step 2: Convert to fraction form
    3,191.29/4,781.70 = 1,956.08/x
  3. Step 3: Cross multiply
    3,191.29x = 4,781.70 × 1,956.08
  4. Step 4: Simplify right side
    3,191.29x = 9,353,399.69
  5. Step 5: Solve for x
    x = 9,353,399.69/3,191.29
  6. Step 6: Final answer
    x = 2,930.92

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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.