Home / 11,187.72-16,782.78-4,945.02

Finding the Fourth Proportional to 11,187.72, 16,782.78 and 4,945.02

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Solution

The fourth proportional to 11,187.72, 16,782.78 and 4,945.02 is: 7,418.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.72 : 16,782.78 = 4,945.02 : x
  2. Step 2: Convert to fraction form
    11,187.72/16,782.78 = 4,945.02/x
  3. Step 3: Cross multiply
    11,187.72x = 16,782.78 × 4,945.02
  4. Step 4: Simplify right side
    11,187.72x = 82,991,182.76
  5. Step 5: Solve for x
    x = 82,991,182.76/11,187.72
  6. Step 6: Final answer
    x = 7,418.06

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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.