Home / 7,719.39-11,573.40-3,822.90

Finding the Fourth Proportional to 7,719.39, 11,573.40 and 3,822.90

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Solution

The fourth proportional to 7,719.39, 11,573.40 and 3,822.90 is: 5,731.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.39 : 11,573.40 = 3,822.90 : x
  2. Step 2: Convert to fraction form
    7,719.39/11,573.40 = 3,822.90/x
  3. Step 3: Cross multiply
    7,719.39x = 11,573.40 × 3,822.90
  4. Step 4: Simplify right side
    7,719.39x = 44,243,950.86
  5. Step 5: Solve for x
    x = 44,243,950.86/7,719.39
  6. Step 6: Final answer
    x = 5,731.53

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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.