Home / 7,826.89-11,740.38-3,930.43

Finding the Fourth Proportional to 7,826.89, 11,740.38 and 3,930.43

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Solution

The fourth proportional to 7,826.89, 11,740.38 and 3,930.43 is: 5,895.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,826.89 : 11,740.38 = 3,930.43 : x
  2. Step 2: Convert to fraction form
    7,826.89/11,740.38 = 3,930.43/x
  3. Step 3: Cross multiply
    7,826.89x = 11,740.38 × 3,930.43
  4. Step 4: Simplify right side
    7,826.89x = 46,144,741.76
  5. Step 5: Solve for x
    x = 46,144,741.76/7,826.89
  6. Step 6: Final answer
    x = 5,895.67

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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.