Home / 3,289.14-4,538.61-2,172.42

Finding the Fourth Proportional to 3,289.14, 4,538.61 and 2,172.42

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Solution

The fourth proportional to 3,289.14, 4,538.61 and 2,172.42 is: 2,997.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.14 : 4,538.61 = 2,172.42 : x
  2. Step 2: Convert to fraction form
    3,289.14/4,538.61 = 2,172.42/x
  3. Step 3: Cross multiply
    3,289.14x = 4,538.61 × 2,172.42
  4. Step 4: Simplify right side
    3,289.14x = 9,859,767.14
  5. Step 5: Solve for x
    x = 9,859,767.14/3,289.14
  6. Step 6: Final answer
    x = 2,997.67

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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.