Home / 7,909.21-11,869.67-3,749.22

Finding the Fourth Proportional to 7,909.21, 11,869.67 and 3,749.22

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Solution

The fourth proportional to 7,909.21, 11,869.67 and 3,749.22 is: 5,626.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.21 : 11,869.67 = 3,749.22 : x
  2. Step 2: Convert to fraction form
    7,909.21/11,869.67 = 3,749.22/x
  3. Step 3: Cross multiply
    7,909.21x = 11,869.67 × 3,749.22
  4. Step 4: Simplify right side
    7,909.21x = 44,502,004.16
  5. Step 5: Solve for x
    x = 44,502,004.16/7,909.21
  6. Step 6: Final answer
    x = 5,626.61

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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.