Home / 7,811.76-11,719.44-2,617.50

Finding the Fourth Proportional to 7,811.76, 11,719.44 and 2,617.50

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Solution

The fourth proportional to 7,811.76, 11,719.44 and 2,617.50 is: 3,926.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.76 : 11,719.44 = 2,617.50 : x
  2. Step 2: Convert to fraction form
    7,811.76/11,719.44 = 2,617.50/x
  3. Step 3: Cross multiply
    7,811.76x = 11,719.44 × 2,617.50
  4. Step 4: Simplify right side
    7,811.76x = 30,675,634.20
  5. Step 5: Solve for x
    x = 30,675,634.20/7,811.76
  6. Step 6: Final answer
    x = 3,926.85

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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.