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Finding the Fourth Proportional to 8,379.51, 11,560.90 and 4,745.06

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Solution

The fourth proportional to 8,379.51, 11,560.90 and 4,745.06 is: 6,546.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.51 : 11,560.90 = 4,745.06 : x
  2. Step 2: Convert to fraction form
    8,379.51/11,560.90 = 4,745.06/x
  3. Step 3: Cross multiply
    8,379.51x = 11,560.90 × 4,745.06
  4. Step 4: Simplify right side
    8,379.51x = 54,857,147.11
  5. Step 5: Solve for x
    x = 54,857,147.11/8,379.51
  6. Step 6: Final answer
    x = 6,546.59

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1.5x scale

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.