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Finding the Fourth Proportional to 3,888.54, 5,366.68 and 2,896.64

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Solution

The fourth proportional to 3,888.54, 5,366.68 and 2,896.64 is: 3,997.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.54 : 5,366.68 = 2,896.64 : x
  2. Step 2: Convert to fraction form
    3,888.54/5,366.68 = 2,896.64/x
  3. Step 3: Cross multiply
    3,888.54x = 5,366.68 × 2,896.64
  4. Step 4: Simplify right side
    3,888.54x = 15,545,326.01
  5. Step 5: Solve for x
    x = 15,545,326.01/3,888.54
  6. Step 6: Final answer
    x = 3,997.73

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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.