Home / 8,709.39-13,065.57-3,163.05

Finding the Fourth Proportional to 8,709.39, 13,065.57 and 3,163.05

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Solution

The fourth proportional to 8,709.39, 13,065.57 and 3,163.05 is: 4,745.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.39 : 13,065.57 = 3,163.05 : x
  2. Step 2: Convert to fraction form
    8,709.39/13,065.57 = 3,163.05/x
  3. Step 3: Cross multiply
    8,709.39x = 13,065.57 × 3,163.05
  4. Step 4: Simplify right side
    8,709.39x = 41,327,051.19
  5. Step 5: Solve for x
    x = 41,327,051.19/8,709.39
  6. Step 6: Final answer
    x = 4,745.11

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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.