Home / 7,971.54-11,958.92-2,781.06

Finding the Fourth Proportional to 7,971.54, 11,958.92 and 2,781.06

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Solution

The fourth proportional to 7,971.54, 11,958.92 and 2,781.06 is: 4,172.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971.54 : 11,958.92 = 2,781.06 : x
  2. Step 2: Convert to fraction form
    7,971.54/11,958.92 = 2,781.06/x
  3. Step 3: Cross multiply
    7,971.54x = 11,958.92 × 2,781.06
  4. Step 4: Simplify right side
    7,971.54x = 33,258,474.06
  5. Step 5: Solve for x
    x = 33,258,474.06/7,971.54
  6. Step 6: Final answer
    x = 4,172.15

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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.