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Finding the Fourth Proportional to 11,860.77, 17,791.16 and 5,203.79

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Solution

The fourth proportional to 11,860.77, 17,791.16 and 5,203.79 is: 7,805.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,860.77 : 17,791.16 = 5,203.79 : x
  2. Step 2: Convert to fraction form
    11,860.77/17,791.16 = 5,203.79/x
  3. Step 3: Cross multiply
    11,860.77x = 17,791.16 × 5,203.79
  4. Step 4: Simplify right side
    11,860.77x = 92,581,345.52
  5. Step 5: Solve for x
    x = 92,581,345.52/11,860.77
  6. Step 6: Final answer
    x = 7,805.68

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1.5x scale

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.