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Finding the Fourth Proportional to 2,251.85, 3,379.40 and 792.23

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Solution

The fourth proportional to 2,251.85, 3,379.40 and 792.23 is: 1,188.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.85 : 3,379.40 = 792.23 : x
  2. Step 2: Convert to fraction form
    2,251.85/3,379.40 = 792.23/x
  3. Step 3: Cross multiply
    2,251.85x = 3,379.40 × 792.23
  4. Step 4: Simplify right side
    2,251.85x = 2,677,258.10
  5. Step 5: Solve for x
    x = 2,677,258.10/2,251.85
  6. Step 6: Final answer
    x = 1,188.91

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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.