Home / 7,720.11-11,579.96-1,876.67

Finding the Fourth Proportional to 7,720.11, 11,579.96 and 1,876.67

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Solution

The fourth proportional to 7,720.11, 11,579.96 and 1,876.67 is: 2,814.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.11 : 11,579.96 = 1,876.67 : x
  2. Step 2: Convert to fraction form
    7,720.11/11,579.96 = 1,876.67/x
  3. Step 3: Cross multiply
    7,720.11x = 11,579.96 × 1,876.67
  4. Step 4: Simplify right side
    7,720.11x = 21,731,753.75
  5. Step 5: Solve for x
    x = 21,731,753.75/7,720.11
  6. Step 6: Final answer
    x = 2,814.95

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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.