Home / 7,780.11-10,736.44-4,243.31

Finding the Fourth Proportional to 7,780.11, 10,736.44 and 4,243.31

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Solution

The fourth proportional to 7,780.11, 10,736.44 and 4,243.31 is: 5,855.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.11 : 10,736.44 = 4,243.31 : x
  2. Step 2: Convert to fraction form
    7,780.11/10,736.44 = 4,243.31/x
  3. Step 3: Cross multiply
    7,780.11x = 10,736.44 × 4,243.31
  4. Step 4: Simplify right side
    7,780.11x = 45,558,059.45
  5. Step 5: Solve for x
    x = 45,558,059.45/7,780.11
  6. Step 6: Final answer
    x = 5,855.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.