Home / 7,408.86-11,113.32-2,729.28

Finding the Fourth Proportional to 7,408.86, 11,113.32 and 2,729.28

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Solution

The fourth proportional to 7,408.86, 11,113.32 and 2,729.28 is: 4,093.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.86 : 11,113.32 = 2,729.28 : x
  2. Step 2: Convert to fraction form
    7,408.86/11,113.32 = 2,729.28/x
  3. Step 3: Cross multiply
    7,408.86x = 11,113.32 × 2,729.28
  4. Step 4: Simplify right side
    7,408.86x = 30,331,362.01
  5. Step 5: Solve for x
    x = 30,331,362.01/7,408.86
  6. Step 6: Final answer
    x = 4,093.93

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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.