Home / 7,971.80-11,958.30-2,425.61

Finding the Fourth Proportional to 7,971.80, 11,958.30 and 2,425.61

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Solution

The fourth proportional to 7,971.80, 11,958.30 and 2,425.61 is: 3,638.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971.80 : 11,958.30 = 2,425.61 : x
  2. Step 2: Convert to fraction form
    7,971.80/11,958.30 = 2,425.61/x
  3. Step 3: Cross multiply
    7,971.80x = 11,958.30 × 2,425.61
  4. Step 4: Simplify right side
    7,971.80x = 29,006,201.96
  5. Step 5: Solve for x
    x = 29,006,201.96/7,971.80
  6. Step 6: Final answer
    x = 3,638.60

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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.