Home / 3,789.90-5,226.60-2,740.14

Finding the Fourth Proportional to 3,789.90, 5,226.60 and 2,740.14

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Solution

The fourth proportional to 3,789.90, 5,226.60 and 2,740.14 is: 3,778.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.90 : 5,226.60 = 2,740.14 : x
  2. Step 2: Convert to fraction form
    3,789.90/5,226.60 = 2,740.14/x
  3. Step 3: Cross multiply
    3,789.90x = 5,226.60 × 2,740.14
  4. Step 4: Simplify right side
    3,789.90x = 14,321,615.72
  5. Step 5: Solve for x
    x = 14,321,615.72/3,789.90
  6. Step 6: Final answer
    x = 3,778.89

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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.