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Finding the Fourth Proportional to 7,868.61, 11,791.04 and 4,745.15

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Solution

The fourth proportional to 7,868.61, 11,791.04 and 4,745.15 is: 7,110.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.61 : 11,791.04 = 4,745.15 : x
  2. Step 2: Convert to fraction form
    7,868.61/11,791.04 = 4,745.15/x
  3. Step 3: Cross multiply
    7,868.61x = 11,791.04 × 4,745.15
  4. Step 4: Simplify right side
    7,868.61x = 55,950,214.99
  5. Step 5: Solve for x
    x = 55,950,214.99/7,868.61
  6. Step 6: Final answer
    x = 7,110.56

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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.