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Finding the Fourth Proportional to 3,980.37, 5,493.52 and 2,865.00

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Solution

The fourth proportional to 3,980.37, 5,493.52 and 2,865.00 is: 3,954.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.37 : 5,493.52 = 2,865.00 : x
  2. Step 2: Convert to fraction form
    3,980.37/5,493.52 = 2,865.00/x
  3. Step 3: Cross multiply
    3,980.37x = 5,493.52 × 2,865.00
  4. Step 4: Simplify right side
    3,980.37x = 15,738,958.98
  5. Step 5: Solve for x
    x = 15,738,958.98/3,980.37
  6. Step 6: Final answer
    x = 3,954.14

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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.