Home / 7,771.68-11,656.80-2,577.12

Finding the Fourth Proportional to 7,771.68, 11,656.80 and 2,577.12

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Solution

The fourth proportional to 7,771.68, 11,656.80 and 2,577.12 is: 3,865.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,771.68 : 11,656.80 = 2,577.12 : x
  2. Step 2: Convert to fraction form
    7,771.68/11,656.80 = 2,577.12/x
  3. Step 3: Cross multiply
    7,771.68x = 11,656.80 × 2,577.12
  4. Step 4: Simplify right side
    7,771.68x = 30,040,972.42
  5. Step 5: Solve for x
    x = 30,040,972.42/7,771.68
  6. Step 6: Final answer
    x = 3,865.44

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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.