Home / 9,139.75-13,709.67-2,214.25

Finding the Fourth Proportional to 9,139.75, 13,709.67 and 2,214.25

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Solution

The fourth proportional to 9,139.75, 13,709.67 and 2,214.25 is: 3,321.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.75 : 13,709.67 = 2,214.25 : x
  2. Step 2: Convert to fraction form
    9,139.75/13,709.67 = 2,214.25/x
  3. Step 3: Cross multiply
    9,139.75x = 13,709.67 × 2,214.25
  4. Step 4: Simplify right side
    9,139.75x = 30,356,636.80
  5. Step 5: Solve for x
    x = 30,356,636.80/9,139.75
  6. Step 6: Final answer
    x = 3,321.39

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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.