Home / 7,771.72-11,659.68-2,577.64

Finding the Fourth Proportional to 7,771.72, 11,659.68 and 2,577.64

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Solution

The fourth proportional to 7,771.72, 11,659.68 and 2,577.64 is: 3,867.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,771.72 : 11,659.68 = 2,577.64 : x
  2. Step 2: Convert to fraction form
    7,771.72/11,659.68 = 2,577.64/x
  3. Step 3: Cross multiply
    7,771.72x = 11,659.68 × 2,577.64
  4. Step 4: Simplify right side
    7,771.72x = 30,054,457.56
  5. Step 5: Solve for x
    x = 30,054,457.56/7,771.72
  6. Step 6: Final answer
    x = 3,867.16

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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.