Home / 2,079.38-3,122.32-1,987.04

Finding the Fourth Proportional to 2,079.38, 3,122.32 and 1,987.04

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Solution

The fourth proportional to 2,079.38, 3,122.32 and 1,987.04 is: 2,983.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.38 : 3,122.32 = 1,987.04 : x
  2. Step 2: Convert to fraction form
    2,079.38/3,122.32 = 1,987.04/x
  3. Step 3: Cross multiply
    2,079.38x = 3,122.32 × 1,987.04
  4. Step 4: Simplify right side
    2,079.38x = 6,204,174.73
  5. Step 5: Solve for x
    x = 6,204,174.73/2,079.38
  6. Step 6: Final answer
    x = 2,983.67

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1.5x scale

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.