Home / 5,091.36-7,631.52-2,165.28

Finding the Fourth Proportional to 5,091.36, 7,631.52 and 2,165.28

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Solution

The fourth proportional to 5,091.36, 7,631.52 and 2,165.28 is: 3,245.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091.36 : 7,631.52 = 2,165.28 : x
  2. Step 2: Convert to fraction form
    5,091.36/7,631.52 = 2,165.28/x
  3. Step 3: Cross multiply
    5,091.36x = 7,631.52 × 2,165.28
  4. Step 4: Simplify right side
    5,091.36x = 16,524,377.63
  5. Step 5: Solve for x
    x = 16,524,377.63/5,091.36
  6. Step 6: Final answer
    x = 3,245.57

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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.