Home / 2,289.38-3,173.79-2,164.65

Finding the Fourth Proportional to 2,289.38, 3,173.79 and 2,164.65

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Solution

The fourth proportional to 2,289.38, 3,173.79 and 2,164.65 is: 3,000.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.38 : 3,173.79 = 2,164.65 : x
  2. Step 2: Convert to fraction form
    2,289.38/3,173.79 = 2,164.65/x
  3. Step 3: Cross multiply
    2,289.38x = 3,173.79 × 2,164.65
  4. Step 4: Simplify right side
    2,289.38x = 6,870,144.52
  5. Step 5: Solve for x
    x = 6,870,144.52/2,289.38
  6. Step 6: Final answer
    x = 3,000.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.