Home / 7,790.11-11,678.24-2,858.63

Finding the Fourth Proportional to 7,790.11, 11,678.24 and 2,858.63

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Solution

The fourth proportional to 7,790.11, 11,678.24 and 2,858.63 is: 4,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.11 : 11,678.24 = 2,858.63 : x
  2. Step 2: Convert to fraction form
    7,790.11/11,678.24 = 2,858.63/x
  3. Step 3: Cross multiply
    7,790.11x = 11,678.24 × 2,858.63
  4. Step 4: Simplify right side
    7,790.11x = 33,383,715.97
  5. Step 5: Solve for x
    x = 33,383,715.97/7,790.11
  6. Step 6: Final answer
    x = 4,285.40

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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.