Home / 9,140.75-13,711.20-2,215.25

Finding the Fourth Proportional to 9,140.75, 13,711.20 and 2,215.25

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Solution

The fourth proportional to 9,140.75, 13,711.20 and 2,215.25 is: 3,322.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.75 : 13,711.20 = 2,215.25 : x
  2. Step 2: Convert to fraction form
    9,140.75/13,711.20 = 2,215.25/x
  3. Step 3: Cross multiply
    9,140.75x = 13,711.20 × 2,215.25
  4. Step 4: Simplify right side
    9,140.75x = 30,373,735.80
  5. Step 5: Solve for x
    x = 30,373,735.80/9,140.75
  6. Step 6: Final answer
    x = 3,322.89

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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.