Home / 9,877.20-14,815.80-2,481.78

Finding the Fourth Proportional to 9,877.20, 14,815.80 and 2,481.78

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Solution

The fourth proportional to 9,877.20, 14,815.80 and 2,481.78 is: 3,722.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,877.20 : 14,815.80 = 2,481.78 : x
  2. Step 2: Convert to fraction form
    9,877.20/14,815.80 = 2,481.78/x
  3. Step 3: Cross multiply
    9,877.20x = 14,815.80 × 2,481.78
  4. Step 4: Simplify right side
    9,877.20x = 36,769,556.12
  5. Step 5: Solve for x
    x = 36,769,556.12/9,877.20
  6. Step 6: Final answer
    x = 3,722.67

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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.