Home / 7,742.75-11,614.26-3,125.75

Finding the Fourth Proportional to 7,742.75, 11,614.26 and 3,125.75

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Solution

The fourth proportional to 7,742.75, 11,614.26 and 3,125.75 is: 4,688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.75 : 11,614.26 = 3,125.75 : x
  2. Step 2: Convert to fraction form
    7,742.75/11,614.26 = 3,125.75/x
  3. Step 3: Cross multiply
    7,742.75x = 11,614.26 × 3,125.75
  4. Step 4: Simplify right side
    7,742.75x = 36,303,273.20
  5. Step 5: Solve for x
    x = 36,303,273.20/7,742.75
  6. Step 6: Final answer
    x = 4,688.68

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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.