Home / 2,169.20-2,992.96-1,372.47

Finding the Fourth Proportional to 2,169.20, 2,992.96 and 1,372.47

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Solution

The fourth proportional to 2,169.20, 2,992.96 and 1,372.47 is: 1,893.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.20 : 2,992.96 = 1,372.47 : x
  2. Step 2: Convert to fraction form
    2,169.20/2,992.96 = 1,372.47/x
  3. Step 3: Cross multiply
    2,169.20x = 2,992.96 × 1,372.47
  4. Step 4: Simplify right side
    2,169.20x = 4,107,747.81
  5. Step 5: Solve for x
    x = 4,107,747.81/2,169.20
  6. Step 6: Final answer
    x = 1,893.67

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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.