Home / 7,861.20-11,788.56-2,929.92

Finding the Fourth Proportional to 7,861.20, 11,788.56 and 2,929.92

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Solution

The fourth proportional to 7,861.20, 11,788.56 and 2,929.92 is: 4,393.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,861.20 : 11,788.56 = 2,929.92 : x
  2. Step 2: Convert to fraction form
    7,861.20/11,788.56 = 2,929.92/x
  3. Step 3: Cross multiply
    7,861.20x = 11,788.56 × 2,929.92
  4. Step 4: Simplify right side
    7,861.20x = 34,539,537.72
  5. Step 5: Solve for x
    x = 34,539,537.72/7,861.20
  6. Step 6: Final answer
    x = 4,393.67

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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.