Home / 7,865.86-11,788.30-2,930.54

Finding the Fourth Proportional to 7,865.86, 11,788.30 and 2,930.54

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Solution

The fourth proportional to 7,865.86, 11,788.30 and 2,930.54 is: 4,391.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,865.86 : 11,788.30 = 2,930.54 : x
  2. Step 2: Convert to fraction form
    7,865.86/11,788.30 = 2,930.54/x
  3. Step 3: Cross multiply
    7,865.86x = 11,788.30 × 2,930.54
  4. Step 4: Simplify right side
    7,865.86x = 34,546,084.68
  5. Step 5: Solve for x
    x = 34,546,084.68/7,865.86
  6. Step 6: Final answer
    x = 4,391.90

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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.